diff --git a/browser/net/brave_network_delegate_base.cc b/browser/net/brave_network_delegate_base.cc
index cb2fe0813fd..dd7ef1047c4 100644
--- a/browser/net/brave_network_delegate_base.cc
+++ b/browser/net/brave_network_delegate_base.cc
@@ -385,9 +385,8 @@ void BraveNetworkDelegateBase::RunNextCallback(
         RunCallbackForRequestIdentifier(ctx->request_identifier,
             net::ERR_ABORTED);
         return;
-      } else {
-        request->SetExtraRequestHeaderByName("X-Brave-Block", "", true);
       }
+      request->SetExtraRequestHeaderByName("X-Brave-Block", "", true);
     }
     rv = ChromeNetworkDelegate::OnBeforeURLRequest(
         request, std::move(wrapped_callback), ctx->new_url);
diff --git a/components/brave_shields/browser/ad_block_service_browsertest.cc b/components/brave_shields/browser/ad_block_service_browsertest.cc
index a50948a99de..aca8de9bcac 100644
--- a/components/brave_shields/browser/ad_block_service_browsertest.cc
+++ b/components/brave_shields/browser/ad_block_service_browsertest.cc
@@ -239,7 +239,7 @@ IN_PROC_BROWSER_TEST_F(AdBlockServiceTest, AdsGetBlockedByDefaultBlocker) {
 
   bool as_expected = false;
   ASSERT_TRUE(ExecuteScriptAndExtractBool(contents,
-                                          "setExpectations(0, 1, 0, 0);"
+                                          "setExpectations(0, 1, 0, 0, 0, 0);"
                                           "addImage('ad_banner.png')",
                                           &as_expected));
   EXPECT_TRUE(as_expected);
@@ -262,7 +262,7 @@ IN_PROC_BROWSER_TEST_F(AdBlockServiceTest,
 
   bool as_expected = false;
   ASSERT_TRUE(ExecuteScriptAndExtractBool(contents,
-                                          "setExpectations(1, 0, 0, 0);"
+                                          "setExpectations(1, 0, 0, 0, 0, 0);"
                                           "addImage('logo.png')",
                                           &as_expected));
   EXPECT_TRUE(as_expected);
@@ -283,7 +283,7 @@ IN_PROC_BROWSER_TEST_F(AdBlockServiceTest, AdsGetBlockedByCustomBlocker) {
 
   bool as_expected = false;
   ASSERT_TRUE(ExecuteScriptAndExtractBool(contents,
-                                          "setExpectations(0, 1, 0, 0);"
+                                          "setExpectations(0, 1, 0, 0, 0, 0);"
                                           "addImage('ad_banner.png')",
                                           &as_expected));
   EXPECT_TRUE(as_expected);
@@ -307,7 +307,7 @@ IN_PROC_BROWSER_TEST_F(AdBlockServiceTest,
 
   bool as_expected = false;
   ASSERT_TRUE(ExecuteScriptAndExtractBool(contents,
-                                          "setExpectations(1, 0, 0, 0);"
+                                          "setExpectations(1, 0, 0, 0, 0, 0);"
                                           "addImage('logo.png')",
                                           &as_expected));
   EXPECT_TRUE(as_expected);
@@ -335,7 +335,7 @@ IN_PROC_BROWSER_TEST_F(AdBlockServiceTest, AdsGetBlockedByRegionalBlocker) {
 
   bool as_expected = false;
   ASSERT_TRUE(ExecuteScriptAndExtractBool(contents,
-                                          "setExpectations(0, 1, 0, 0);"
+                                          "setExpectations(0, 1, 0, 0, 0, 0);"
                                           "addImage('ad_fr.png')",
                                           &as_expected));
   EXPECT_TRUE(as_expected);
@@ -364,7 +364,7 @@ IN_PROC_BROWSER_TEST_F(AdBlockServiceTest,
 
   bool as_expected = false;
   ASSERT_TRUE(ExecuteScriptAndExtractBool(contents,
-                                          "setExpectations(1, 0, 0, 0);"
+                                          "setExpectations(1, 0, 0, 0, 0, 0);"
                                           "addImage('logo.png')",
                                           &as_expected));
   EXPECT_TRUE(as_expected);
@@ -398,7 +398,7 @@ IN_PROC_BROWSER_TEST_F(AdBlockServiceTest,
 
   bool as_expected = false;
   ASSERT_TRUE(ExecuteScriptAndExtractBool(contents,
-                                          "setExpectations(0, 1, 0, 0);"
+                                          "setExpectations(0, 1, 0, 0, 0, 0);"
                                           "addImage('v4_specific_banner.png')",
                                           &as_expected));
   EXPECT_TRUE(as_expected);
@@ -421,7 +421,7 @@ IN_PROC_BROWSER_TEST_F(AdBlockServiceTest, TwoSameAdsGetCountedAsOne) {
 
   bool as_expected = false;
   ASSERT_TRUE(ExecuteScriptAndExtractBool(contents,
-                                          "setExpectations(0, 0, 1, 2);"
+                                          "setExpectations(0, 0, 0, 1, 2, 0);"
                                           "xhr('adbanner.js');"
                                           "xhr('normal.js');"
                                           "xhr('adbanner.js')",
@@ -445,7 +445,7 @@ IN_PROC_BROWSER_TEST_F(AdBlockServiceTest, TwoDiffAdsGetCountedAsTwo) {
 
   bool as_expected = false;
   ASSERT_TRUE(ExecuteScriptAndExtractBool(contents,
-                                          "setExpectations(0, 0, 1, 2);"
+                                          "setExpectations(0, 0, 0, 1, 2, 0);"
                                           "xhr('adbanner.js?1');"
                                           "xhr('normal.js');"
                                           "xhr('adbanner.js?2')",
@@ -469,7 +469,7 @@ IN_PROC_BROWSER_TEST_F(AdBlockServiceTest, NewTabContinuesToBlock) {
 
   bool as_expected = false;
   ASSERT_TRUE(ExecuteScriptAndExtractBool(contents,
-                                          "setExpectations(0, 0, 0, 1);"
+                                          "setExpectations(0, 0, 0, 0, 1, 0);"
                                           "xhr('adbanner.js');",
                                           &as_expected));
   EXPECT_TRUE(as_expected);
@@ -480,7 +480,7 @@ IN_PROC_BROWSER_TEST_F(AdBlockServiceTest, NewTabContinuesToBlock) {
 
   as_expected = false;
   ASSERT_TRUE(ExecuteScriptAndExtractBool(contents,
-                                          "setExpectations(0, 0, 0, 1);"
+                                          "setExpectations(0, 0, 0, 0, 1, 0);"
                                           "xhr('adbanner.js');",
                                           &as_expected));
   EXPECT_TRUE(as_expected);
@@ -504,7 +504,7 @@ IN_PROC_BROWSER_TEST_F(AdBlockServiceTest, SubFrame) {
 
   bool as_expected = false;
   ASSERT_TRUE(ExecuteScriptAndExtractBool(contents->GetAllFrames()[1],
-                                          "setExpectations(0, 0, 0, 1);"
+                                          "setExpectations(0, 0, 0, 0, 1, 0);"
                                           "xhr('adbanner.js?1');",
                                           &as_expected));
   EXPECT_TRUE(as_expected);
@@ -544,7 +544,7 @@ IN_PROC_BROWSER_TEST_F(AdBlockServiceTest,
       browser()->tab_strip_model()->GetActiveWebContents();
   bool as_expected = false;
   ASSERT_TRUE(ExecuteScriptAndExtractBool(contents,
-                                          "setExpectations(1, 0, 0, 0);"
+                                          "setExpectations(1, 0, 0, 0, 0, 0);"
                                           "addImage('ad_fr.png')",
                                           &as_expected));
   EXPECT_TRUE(as_expected);
@@ -570,11 +570,11 @@ IN_PROC_BROWSER_TEST_F(AdBlockServiceTest,
   GURL test_url = embedded_test_server()->GetURL("365dm.com", "/logo.png");
   bool as_expected = false;
   ASSERT_TRUE(ExecuteScriptAndExtractBool(contents,
-                                          base::StringPrintf(
-                                              "setExpectations(0, 1, 0, 0);"
-                                              "addImage('%s')",
-                                          test_url.spec().c_str()),
-                                          &as_expected));
+      base::StringPrintf(
+          "setExpectations(0, 1, 0, 0, 0, 0);"
+          "addImage('%s')",
+      test_url.spec().c_str()),
+      &as_expected));
   EXPECT_TRUE(as_expected);
   EXPECT_EQ(browser()->profile()->GetPrefs()->GetUint64(kTrackersBlocked),
       1ULL);
@@ -596,11 +596,11 @@ IN_PROC_BROWSER_TEST_F(AdBlockServiceTest,
   GURL test_url = embedded_test_server()->GetURL("365dm.com", "/logo.png");
   bool as_expected = false;
   ASSERT_TRUE(ExecuteScriptAndExtractBool(contents,
-                                          base::StringPrintf(
-                                              "setExpectations(1, 0, 0, 0);"
-                                              "addImage('%s')",
-                                          test_url.spec().c_str()),
-                                          &as_expected));
+      base::StringPrintf(
+          "setExpectations(1, 0, 0, 0, 0, 0);"
+          "addImage('%s')",
+      test_url.spec().c_str()),
+      &as_expected));
   EXPECT_TRUE(as_expected);
   EXPECT_EQ(browser()->profile()->GetPrefs()->GetUint64(kTrackersBlocked),
       0ULL);
@@ -620,11 +620,11 @@ IN_PROC_BROWSER_TEST_F(AdBlockServiceTest, AdBlockThirdPartyWorksByETLDP1) {
       browser()->tab_strip_model()->GetActiveWebContents();
   bool as_expected = false;
   ASSERT_TRUE(ExecuteScriptAndExtractBool(contents,
-                                          base::StringPrintf(
-                                              "setExpectations(1, 0, 0, 0);"
-                                              "addImage('%s')",
-                                          resource_url.spec().c_str()),
-                                          &as_expected));
+      base::StringPrintf(
+          "setExpectations(1, 0, 0, 0, 0, 0);"
+          "addImage('%s')",
+      resource_url.spec().c_str()),
+      &as_expected));
   EXPECT_TRUE(as_expected);
   EXPECT_EQ(browser()->profile()->GetPrefs()->GetUint64(kAdsBlocked), 0ULL);
 }
@@ -643,11 +643,11 @@ IN_PROC_BROWSER_TEST_F(AdBlockServiceTest,
       browser()->tab_strip_model()->GetActiveWebContents();
   bool as_expected = false;
   ASSERT_TRUE(ExecuteScriptAndExtractBool(contents,
-                                          base::StringPrintf(
-                                              "setExpectations(0, 1, 0, 0);"
-                                              "addImage('%s')",
-                                          resource_url.spec().c_str()),
-                                          &as_expected));
+      base::StringPrintf(
+          "setExpectations(0, 1, 0, 0, 0, 0);"
+          "addImage('%s')",
+      resource_url.spec().c_str()),
+      &as_expected));
   EXPECT_TRUE(as_expected);
   EXPECT_EQ(browser()->profile()->GetPrefs()->GetUint64(kAdsBlocked), 1ULL);
 }
@@ -666,7 +666,7 @@ IN_PROC_BROWSER_TEST_F(AdBlockServiceTest, BlockNYP) {
   bool as_expected = false;
   ASSERT_TRUE(ExecuteScriptAndExtractBool(contents,
                                           base::StringPrintf(
-                                            "setExpectations(0, 1, 0, 0);"
+                                            "setExpectations(0, 1, 0, 0, 0, 0);"
                                             "addImage('%s')",
                                             resource_url.spec().c_str()),
                                           &as_expected));
@@ -692,7 +692,7 @@ IN_PROC_BROWSER_TEST_F(AdBlockServiceTest, SocialButttonAdBLockTagTest) {
   bool as_expected = false;
   ASSERT_TRUE(ExecuteScriptAndExtractBool(contents,
                                           base::StringPrintf(
-                                            "setExpectations(0, 1, 0, 0);"
+                                            "setExpectations(0, 1, 0, 0, 0, 0);"
                                             "addImage('%s')",
                                             resource_url.spec().c_str()),
                                           &as_expected));
@@ -717,7 +717,7 @@ IN_PROC_BROWSER_TEST_F(AdBlockServiceTest, SocialButttonAdBlockDiffTagTest) {
   bool as_expected = false;
   ASSERT_TRUE(ExecuteScriptAndExtractBool(contents,
                                           base::StringPrintf(
-                                            "setExpectations(1, 0, 0, 0);"
+                                            "setExpectations(1, 0, 0, 0, 0, 0);"
                                             "addImage('%s')",
                                             resource_url.spec().c_str()),
                                           &as_expected));
@@ -772,3 +772,25 @@ IN_PROC_BROWSER_TEST_F(AdBlockServiceTest, TagPrefsControlTags) {
   AssertTagExists(brave_shields::kTwitterEmbeds, true);
   AssertTagExists(brave_shields::kLinkedInEmbeds, false);
 }
+
+// Make sure that cancelrequest actually blocks
+IN_PROC_BROWSER_TEST_F(AdBlockServiceTest, CancelRequestOptionTest) {
+  AddRulesToAdBlock("logo.png$explicitcancel");
+  EXPECT_EQ(browser()->profile()->GetPrefs()->GetUint64(kAdsBlocked), 0ULL);
+  GURL tab_url = embedded_test_server()->GetURL("b.com",
+                                                kAdBlockTestPage);
+  GURL resource_url =
+    embedded_test_server()->GetURL("example.com", "/logo.png");
+  ui_test_utils::NavigateToURL(browser(), tab_url);
+  content::WebContents* contents =
+    browser()->tab_strip_model()->GetActiveWebContents();
+  bool as_expected = false;
+  ASSERT_TRUE(ExecuteScriptAndExtractBool(contents,
+                                          base::StringPrintf(
+                                            "setExpectations(0, 0, 1, 0, 0, 0);"
+                                            "addImage('%s')",
+                                            resource_url.spec().c_str()),
+                                          &as_expected));
+  EXPECT_TRUE(as_expected);
+  EXPECT_EQ(browser()->profile()->GetPrefs()->GetUint64(kAdsBlocked), 1ULL);
+}
diff --git a/test/data/blocking.html b/test/data/blocking.html
index bc78a3f100e..0d4a68c4169 100644
--- a/test/data/blocking.html
+++ b/test/data/blocking.html
@@ -2,21 +2,28 @@
 <head>
 <script>
 let expectedImgLoaded = 0
+let expectedImgLoadedBlank = 0
 let expectedImgBlocked = 0
 let expectedXHRLoaded = 0
+let expectedXHRLoadedBlank = 0
 let expectedXHRBlocked = 0
 let numXHRLoaded = 0
+let numXHRLoadedBlank = 0
 let numXHRBlocked = 0
+let numImgLoaded = 0
+let numImgLoadedBlank = 0
+let numImgBlocked = 0
 
 // Performs an XHR for the specified src
 function xhr(src) {
   const xhr = new XMLHttpRequest();
   xhr.open('GET', src, true);
   xhr.onload = function(e) {
-    if (xhr.response.length !== 0)
+    if (xhr.response.length !== 0) {
       numXHRLoaded++
-    else
-      numXHRBlocked++
+    } else {
+      numXHRLoadedBlank++
+    }
     onLoad()
   }
   xhr.onerror = function(e) {
@@ -32,41 +39,50 @@ function addImage(src) {
   img.src = src
   img.className = 'adImage'
   img.addEventListener('load', onLoad)
+  img.addEventListener('error', () => {
+    onLoad()
+  })
+
+  img.addEventListener('load', () => {
+    if (img.complete &&
+        (img.naturalHeight !== 1 || img.naturalWidth !== 1)) {
+      numImgLoaded++
+    } else {
+      numImgLoadedBlank++
+    }
+    onLoad()
+  })
+  img.addEventListener('error', () => {
+    numImgBlocked++
+    onLoad()
+  })
   document.body.appendChild(img)
 }
 
 // Sets the expectation for the number of images and XHR loaded and blocked
-function setExpectations(numImgLoaded, numImgBlocked, numXHRLoaded, numXHRBlocked) {
+function setExpectations(numImgLoaded, numImgLoadedBlank, numImgBlocked, numXHRLoaded, numXHRLoadedBlank, numXHRBlocked) {
   expectedImgLoaded = numImgLoaded
+  expectedImgLoadedBlank = numImgLoadedBlank
   expectedImgBlocked = numImgBlocked
   expectedXHRLoaded = numXHRLoaded
+  expectedXHRLoadedBlank = numXHRLoadedBlank
   expectedXHRBlocked = numXHRBlocked
 }
 
 function onLoad() {
-  const adImages = Array.from(document.querySelectorAll('.adImage'))
-  if (adImages.length !== expectedImgLoaded + expectedImgBlocked ||
-      numXHRLoaded + numXHRBlocked !== expectedXHRLoaded + expectedXHRBlocked) {
+  if (numImgLoaded + numImgLoadedBlank + numImgBlocked !== expectedImgLoaded + expectedImgBlocked + expectedImgLoadedBlank ||
+      numXHRLoaded + numXHRLoadedBlank + numXHRBlocked !== expectedXHRLoaded + expectedXHRLoadedBlank + expectedXHRBlocked) {
     return;
   }
-
-  // Blocked image should be a 1x1 stub
-  const numImgLoaded = adImages.reduce((total, adImage) => {
-    if (adImage.complete &&
-        (adImage.naturalHeight !== 1 || adImage.naturalWidth !== 1)) {
-      return total + 1
-    }
-    return total
-  }, 0);
-
-  const numImgBlocked = adImages.length - numImgLoaded
   const result = numImgLoaded == expectedImgLoaded &&
+      expectedImgLoadedBlank == numImgLoadedBlank &&
       expectedImgBlocked == numImgBlocked &&
       numXHRLoaded === expectedXHRLoaded &&
+      numXHRLoadedBlank === expectedXHRLoadedBlank &&
       numXHRBlocked === expectedXHRBlocked
   // For debugging:
-  // console.log('sending: ' + JSON.stringify({result, expectedImgLoaded, expectedImgBlocked, numImgBlocked,
-  //    numXHRLoaded, expectedXHRLoaded, numXHRBlocked, expectedXHRBlocked}))
+  // console.log('sending: ' + JSON.stringify({result, expectedImgLoaded, expectedImgLoadedBlank, expectedImgBlocked, numImgLoadedBlank, numImgBlocked,
+  //   numXHRLoaded, expectedXHRLoaded, numXHRLoadedBlank, numXHRBlocked, expectedXHRLoadedBlank, expectedXHRBlocked}))
   window.domAutomationController.send(result)
 }
 </script>