diff --git a/src/System.Windows.Forms/System/Windows/Forms/Controls/RichTextBox/RichTextBox.cs b/src/System.Windows.Forms/System/Windows/Forms/Controls/RichTextBox/RichTextBox.cs
index 4a6c7972a34..48b0044159c 100644
--- a/src/System.Windows.Forms/System/Windows/Forms/Controls/RichTextBox/RichTextBox.cs
+++ b/src/System.Windows.Forms/System/Windows/Forms/Controls/RichTextBox/RichTextBox.cs
@@ -2388,20 +2388,7 @@ protected virtual void OnContentsResized(ContentsResizedEventArgs e)
         ((ContentsResizedEventHandler?)Events[s_requestSizeEvent])?.Invoke(this, e);
     }
 
-    protected override void OnGotFocus(EventArgs e)
-    {
-        base.OnGotFocus(e);
-
-        // Use parent's accessible object because RichTextBox doesn't support UIA Providers, and its
-        // AccessibilityObject doesn't get created even when assistive tech (e.g. Narrator) is used
-        if (Parent?.IsAccessibilityObjectCreated == true)
-        {
-            Parent.AccessibilityObject.InternalRaiseAutomationNotification(
-                Automation.AutomationNotificationKind.Other,
-                Automation.AutomationNotificationProcessing.MostRecent,
-                Text);
-        }
-    }
+    protected override void OnGotFocus(EventArgs e) => base.OnGotFocus(e);
 
     protected override void OnHandleCreated(EventArgs e)
     {
diff --git a/src/test/unit/System.Windows.Forms/System/Windows/Forms/RichTextBoxTests.cs b/src/test/unit/System.Windows.Forms/System/Windows/Forms/RichTextBoxTests.cs
index 349b5f21983..662fae62fbf 100644
--- a/src/test/unit/System.Windows.Forms/System/Windows/Forms/RichTextBoxTests.cs
+++ b/src/test/unit/System.Windows.Forms/System/Windows/Forms/RichTextBoxTests.cs
@@ -10594,26 +10594,21 @@ public void RichTextBox_CheckRichEditWithVersionCanCreateOldVersions()
 
     [WinFormsTheory]
     [NewAndDefaultData<EventArgs>]
-    public void RichTextBox_OnGotFocus_RaisesAutomationNotification_WithText(EventArgs eventArgs)
+    public void RichTextBox_OnGotFocus_DoesNotRaiseAutomationNotification(EventArgs eventArgs)
     {
+        // NVDA and JAWS already announce the focused line via native MSAA on focus; an additional
+        // UIA automation notification caused the line to be read twice. The correct behaviour is
+        // to let the native accessibility infrastructure handle the announcement.
         Mock<Control> mockParent = new() { CallBase = true };
         Mock<Control.ControlAccessibleObject> mockAccessibleObject = new(MockBehavior.Strict, mockParent.Object);
-        mockAccessibleObject
-            .Setup(a => a.InternalRaiseAutomationNotification(
-                It.IsAny<AutomationNotificationKind>(),
-                It.IsAny<AutomationNotificationProcessing>(),
-                It.IsAny<string>()))
-            .Returns(true)
-            .Verifiable();
         mockParent.Protected().Setup<AccessibleObject>("CreateAccessibilityInstance")
             .Returns(mockAccessibleObject.Object);
 
         using Control parent = mockParent.Object;
-        string richTextBoxContent = "RichTextBox";
         using SubRichTextBox control = new()
         {
             Parent = parent,
-            Text = richTextBoxContent,
+            Text = "RichTextBox",
         };
 
         // Enforce accessible object creation
@@ -10622,10 +10617,10 @@ public void RichTextBox_OnGotFocus_RaisesAutomationNotification_WithText(EventAr
         control.OnGotFocus(eventArgs);
 
         mockAccessibleObject.Verify(a => a.InternalRaiseAutomationNotification(
-            AutomationNotificationKind.Other,
-            AutomationNotificationProcessing.MostRecent,
-            richTextBoxContent),
-            Times.Once);
+            It.IsAny<AutomationNotificationKind>(),
+            It.IsAny<AutomationNotificationProcessing>(),
+            It.IsAny<string>()),
+            Times.Never);
     }
 
     [WinFormsTheory]