diff --git a/changes/issue-9898-fleet-mdm-server-url b/changes/issue-9898-fleet-mdm-server-url
new file mode 100644
index 0000000000..200c92ce96
--- /dev/null
+++ b/changes/issue-9898-fleet-mdm-server-url
@@ -0,0 +1 @@
+* Fixed how the Fleet MDM server URL is generated when stored for hosts enrolled in Fleet MDM.
diff --git a/server/datastore/mysql/apple_mdm.go b/server/datastore/mysql/apple_mdm.go
index 8f41fc7c77..498bd1440f 100644
--- a/server/datastore/mysql/apple_mdm.go
+++ b/server/datastore/mysql/apple_mdm.go
@@ -10,6 +10,7 @@ import (
 
 	"github.com/fleetdm/fleet/v4/server/contexts/ctxerr"
 	"github.com/fleetdm/fleet/v4/server/fleet"
+	apple_mdm "github.com/fleetdm/fleet/v4/server/mdm/apple"
 	"github.com/fleetdm/fleet/v4/server/ptr"
 	"github.com/go-kit/kit/log"
 	"github.com/go-kit/kit/log/level"
@@ -437,7 +438,7 @@ func updateMDMAppleHostDB(
 		return ctxerr.Wrap(ctx, err, "update mdm apple host")
 	}
 
-	if err := upsertMDMAppleHostMDMInfoDB(ctx, tx, appCfg.ServerSettings.ServerURL, false, hostID); err != nil {
+	if err := upsertMDMAppleHostMDMInfoDB(ctx, tx, appCfg.ServerSettings, false, hostID); err != nil {
 		return ctxerr.Wrap(ctx, err, "ingest mdm apple host upsert MDM info")
 	}
 
@@ -496,7 +497,7 @@ func insertMDMAppleHostDB(
 		return ctxerr.Wrap(ctx, err, "ingest mdm apple host upsert label membership")
 	}
 
-	if err := upsertMDMAppleHostMDMInfoDB(ctx, tx, appCfg.ServerSettings.ServerURL, false, host.ID); err != nil {
+	if err := upsertMDMAppleHostMDMInfoDB(ctx, tx, appCfg.ServerSettings, false, host.ID); err != nil {
 		return ctxerr.Wrap(ctx, err, "ingest mdm apple host upsert MDM info")
 	}
 	return nil
@@ -611,7 +612,7 @@ func (ds *Datastore) IngestMDMAppleDevicesFromDEPSync(ctx context.Context, devic
 		for _, h := range hosts {
 			ids = append(ids, h.ID)
 		}
-		if err := upsertMDMAppleHostMDMInfoDB(ctx, tx, appCfg.ServerSettings.ServerURL, true, ids...); err != nil {
+		if err := upsertMDMAppleHostMDMInfoDB(ctx, tx, appCfg.ServerSettings, true, ids...); err != nil {
 			return ctxerr.Wrap(ctx, err, "ingest mdm apple host upsert MDM info")
 		}
 
@@ -640,7 +641,12 @@ func upsertMDMAppleHostDisplayNamesDB(ctx context.Context, tx sqlx.ExtContext, h
 	return nil
 }
 
-func upsertMDMAppleHostMDMInfoDB(ctx context.Context, tx sqlx.ExtContext, serverURL string, fromSync bool, hostIDs ...uint) error {
+func upsertMDMAppleHostMDMInfoDB(ctx context.Context, tx sqlx.ExtContext, serverSettings fleet.ServerSettings, fromSync bool, hostIDs ...uint) error {
+	serverURL, err := apple_mdm.ResolveAppleMDMURL(serverSettings.ServerURL)
+	if err != nil {
+		return ctxerr.Wrap(ctx, err, "resolve Fleet MDM URL")
+	}
+
 	result, err := tx.ExecContext(ctx, `
 		INSERT INTO mobile_device_management_solutions (name, server_url) VALUES (?, ?)
 		ON DUPLICATE KEY UPDATE server_url = VALUES(server_url)`,
diff --git a/server/datastore/mysql/apple_mdm_test.go b/server/datastore/mysql/apple_mdm_test.go
index 2bbd91864d..57c4620306 100644
--- a/server/datastore/mysql/apple_mdm_test.go
+++ b/server/datastore/mysql/apple_mdm_test.go
@@ -8,6 +8,7 @@ import (
 	"time"
 
 	"github.com/fleetdm/fleet/v4/server/fleet"
+	apple_mdm "github.com/fleetdm/fleet/v4/server/mdm/apple"
 	"github.com/fleetdm/fleet/v4/server/ptr"
 	"github.com/fleetdm/fleet/v4/server/test"
 	"github.com/jmoiron/sqlx"
@@ -630,14 +631,16 @@ func checkMDMHostRelatedTables(t *testing.T, ds *Datastore, hostID uint, expecte
 	err = sqlx.GetContext(context.Background(), ds.reader, &hmdm, `SELECT host_id, server_url, mdm_id FROM host_mdm WHERE host_id = ?`, hostID)
 	require.NoError(t, err)
 	require.Equal(t, hostID, hmdm.HostID)
-	require.Equal(t, appCfg.ServerSettings.ServerURL, hmdm.ServerURL)
+	serverURL, err := apple_mdm.ResolveAppleMDMURL(appCfg.ServerSettings.ServerURL)
+	require.NoError(t, err)
+	require.Equal(t, serverURL, hmdm.ServerURL)
 	require.NotEmpty(t, hmdm.MDMID)
 
 	var mdmSolution fleet.MDMSolution
 	err = sqlx.GetContext(context.Background(), ds.reader, &mdmSolution, `SELECT name, server_url FROM mobile_device_management_solutions WHERE id = ?`, hmdm.MDMID)
 	require.NoError(t, err)
 	require.Equal(t, fleet.WellKnownMDMFleet, mdmSolution.Name)
-	require.Equal(t, appCfg.ServerSettings.ServerURL, mdmSolution.ServerURL)
+	require.Equal(t, serverURL, mdmSolution.ServerURL)
 }
 
 // createBuiltinLabels creates entries for "All Hosts" and "macOS" labels, which are assumed to be
diff --git a/server/datastore/mysql/mysql_test.go b/server/datastore/mysql/mysql_test.go
index eaa654a94e..be9c0b4856 100644
--- a/server/datastore/mysql/mysql_test.go
+++ b/server/datastore/mysql/mysql_test.go
@@ -90,6 +90,8 @@ func TestSanitizeColumn(t *testing.T) {
 		{"foobar*baz", "`foobarbaz`"},
 		{"....", ""},
 		{"h.id", "`h`.`id`"},
+		{"id;delete from hosts", "`iddeletefromhosts`"},
+		{"select * from foo", "`selectfromfoo`"},
 	}
 
 	for _, tt := range testCases {