diff --git a/android/java/org/chromium/chrome/browser/BraveRewardsSiteBannerActivity.java b/android/java/org/chromium/chrome/browser/BraveRewardsSiteBannerActivity.java
index aeb042f5278..90090846ac6 100644
--- a/android/java/org/chromium/chrome/browser/BraveRewardsSiteBannerActivity.java
+++ b/android/java/org/chromium/chrome/browser/BraveRewardsSiteBannerActivity.java
@@ -54,7 +54,7 @@ public class BraveRewardsSiteBannerActivity
     public static final int TIP_SUCCESS = 2;
     public static final int TIP_PENDING = 3;
 
-    private View progressBar;
+    private View mProgressBar;
     private boolean mIsActivityIsActive;
 
     private static final String TAG = "TippingBanner";
@@ -66,14 +66,13 @@ public class BraveRewardsSiteBannerActivity
         super.onCreate(savedInstanceState);
         setContentView(R.layout.brave_rewards_site_banner);
         mIsActivityIsActive = true;
-        progressBar = findViewById(R.id.progressBar);
+        mProgressBar = findViewById(R.id.progressBar);
         mBraveRewardsNativeWorker = BraveRewardsNativeWorker.getInstance();
         mBraveRewardsNativeWorker.AddObserver(this);
 
         currentTabId_ = IntentUtils.safeGetIntExtra(getIntent(), TAB_ID_EXTRA, -1);
         mIsMonthlyContribution =
                 IntentUtils.safeGetBooleanExtra(getIntent(), IS_MONTHLY_CONTRIBUTION, false);
-        mBannerInfo = null;
         if (savedInstanceState == null) {
             mBraveRewardsNativeWorker.GetPublisherBanner(
                     mBraveRewardsNativeWorker.GetPublisherId(currentTabId_));
@@ -90,10 +89,12 @@ public class BraveRewardsSiteBannerActivity
                 try {
                     mBannerInfo = new BraveRewardsBannerInfo(jsonBannerInfo);
                 } catch (JSONException e) {
-                    Log.e(TAG, "BraveRewardsSiteBannerActivity:onPublisherBanner JSONException error " + e);
+                    Log.e(TAG,
+                            "BraveRewardsSiteBannerActivity:onPublisherBanner JSONException error "
+                                    + e);
                 }
 
-                progressBar.setVisibility(View.GONE);
+                mProgressBar.setVisibility(View.GONE);
 
                 BraveRewardsCreatorPanelFragment creatorPanelFragment =
                         BraveRewardsCreatorPanelFragment.newInstance(
@@ -131,13 +132,13 @@ public class BraveRewardsSiteBannerActivity
         mAmount = amount;
         mIsMonthly = isMonthly;
         mTipUpdated = false;
-        progressBar.setVisibility(View.VISIBLE);
+        mProgressBar.setVisibility(View.VISIBLE);
         enableTimeout(); // wait for 3 seconds
     }
 
     private void tipConfirmation(int status, double amount, boolean isMonthly) {
         if (!mIsActivityIsActive) return;
-        progressBar.setVisibility(View.GONE);
+        mProgressBar.setVisibility(View.GONE);
 
         String publisherName = "";
         if (mBannerInfo != null) publisherName = mBannerInfo.getName();
diff --git a/android/java/org/chromium/chrome/browser/rewards/BraveRewardsCreatorPanelFragment.java b/android/java/org/chromium/chrome/browser/rewards/BraveRewardsCreatorPanelFragment.java
index fb3e057a307..e05b6d4df6f 100644
--- a/android/java/org/chromium/chrome/browser/rewards/BraveRewardsCreatorPanelFragment.java
+++ b/android/java/org/chromium/chrome/browser/rewards/BraveRewardsCreatorPanelFragment.java
@@ -74,7 +74,6 @@ public class BraveRewardsCreatorPanelFragment extends Fragment
 
     private static final String TAG = "TippingBanner";
 
-
     public static BraveRewardsCreatorPanelFragment newInstance(
             int tabId, boolean isMonthlyContribution, String bannerInfo) {
         BraveRewardsCreatorPanelFragment fragment = new BraveRewardsCreatorPanelFragment();
diff --git a/android/java/org/chromium/chrome/browser/rewards/BraveRewardsCustomTipFragment.java b/android/java/org/chromium/chrome/browser/rewards/BraveRewardsCustomTipFragment.java
index 81166603b38..1d11a06d38e 100644
--- a/android/java/org/chromium/chrome/browser/rewards/BraveRewardsCustomTipFragment.java
+++ b/android/java/org/chromium/chrome/browser/rewards/BraveRewardsCustomTipFragment.java
@@ -12,6 +12,7 @@ import android.os.Bundle;
 import android.text.Editable;
 import android.text.InputFilter;
 import android.text.Spanned;
+import android.text.TextUtils;
 import android.text.TextWatcher;
 import android.util.Log;
 import android.view.LayoutInflater;
@@ -118,7 +119,7 @@ public class BraveRewardsCustomTipFragment extends Fragment {
         @SuppressLint("SetTextI18n")
         @Override
         public void onTextChanged(CharSequence s, int start, int before, int count) {
-            if (s == null || s.toString().isEmpty()) s = "0";
+            if (TextUtils.isEmpty(s)) s = "0";
             Double batValue = getBatValue(s.toString());
             Double usdValue = exchangeRate * batValue;
 
@@ -156,7 +157,7 @@ public class BraveRewardsCustomTipFragment extends Fragment {
      *
      * @param inputValue : editText string passed here
      * @return
-     * convert to bat value if current editText is usd
+     * convert to bat value if current editText is USD
      * It will return multiple 0.25
      * And also return which is lower between Max and value
      * decimal points always roundedOff to floor value.
@@ -164,7 +165,7 @@ public class BraveRewardsCustomTipFragment extends Fragment {
     private double getBatValue(String inputValue) {
         double rawValue = Double.parseDouble(inputValue);
         if (!isBatCurrencyMode) {
-            // from usd to BAT
+            // from USD to BAT
             rawValue = rawValue / exchangeRate;
         }
 
diff --git a/android/java/org/chromium/chrome/browser/rewards/BraveRewardsTipConfirmationFragment.java b/android/java/org/chromium/chrome/browser/rewards/BraveRewardsTipConfirmationFragment.java
index 0fdb43ae46f..a9dfde9fd55 100644
--- a/android/java/org/chromium/chrome/browser/rewards/BraveRewardsTipConfirmationFragment.java
+++ b/android/java/org/chromium/chrome/browser/rewards/BraveRewardsTipConfirmationFragment.java
@@ -44,7 +44,6 @@ public class BraveRewardsTipConfirmationFragment extends Fragment implements Bra
 
     private static final String TAG = "TippingBanner";
 
-
     public static BraveRewardsTipConfirmationFragment newInstance(
             int status, String name, double amount, boolean isMonthly) {
         BraveRewardsTipConfirmationFragment fragment = new BraveRewardsTipConfirmationFragment();
@@ -125,7 +124,8 @@ public class BraveRewardsTipConfirmationFragment extends Fragment implements Bra
                 startActivity(new Intent(Intent.ACTION_VIEW, uri));
             } else {
                 // error
-                Log.e(TAG, "BraveRewardsTipConfirmationFragment -> setTweetClickListener invalid status ");
+                Log.e(TAG,
+                        "BraveRewardsTipConfirmationFragment -> setTweetClickListener invalid status ");
             }
         });
     }
diff --git a/components/resources/strings/brave_components_resources_en-GB.xtb b/components/resources/strings/brave_components_resources_en-GB.xtb
index 2b39fe70c7c..86732a639ec 100644
--- a/components/resources/strings/brave_components_resources_en-GB.xtb
+++ b/components/resources/strings/brave_components_resources_en-GB.xtb
@@ -402,7 +402,7 @@
 <translation id="6306631474379759382">Next tip date:</translation>
 <translation id="3593485149443019592">Not enough tokens. Please <ph name="LINK_BEGIN"/>add funds<ph name="LINK_END"/>.</translation>
 <translation id="3586352807094428968">Brave collects 5% of the tip amount as a processing fee.</translation>
-<translation id="207268487070188114">One-Time Tip</translation>
+<translation id="207268487070188114">One-time tip</translation>
 <translation id="69861679024013299">One-time tip amount:</translation>
 <translation id="3669086939205397942">Hold on, you can’t tip yet</translation>
 <translation id="3288812755711687300"><ph name="USER"/>’s post</translation>