diff --git a/mozilla/content/shared/src/nsStyleStruct.cpp b/mozilla/content/shared/src/nsStyleStruct.cpp
index 8e931facda5..514c2e2e145 100644
--- a/mozilla/content/shared/src/nsStyleStruct.cpp
+++ b/mozilla/content/shared/src/nsStyleStruct.cpp
@@ -1311,8 +1311,14 @@ nsChangeHint nsStyleTextReset::CalcDifference(const nsStyleTextReset& aOther) co
 {
   if (mVerticalAlign == aOther.mVerticalAlign
       && mUnicodeBidi == aOther.mUnicodeBidi) {
-    if (mTextDecoration != aOther.mTextDecoration)
-      return NS_STYLE_HINT_VISUAL;
+    if (mTextDecoration != aOther.mTextDecoration) {
+      // Reflow for blink changes, repaint for others
+      return
+        (mTextDecoration & NS_STYLE_TEXT_DECORATION_BLINK) ==
+        (aOther.mTextDecoration & NS_STYLE_TEXT_DECORATION_BLINK) ?
+          NS_STYLE_HINT_VISUAL : NS_STYLE_HINT_REFLOW;
+    }
+    
     return NS_STYLE_HINT_NONE;
   }
   return NS_STYLE_HINT_REFLOW;
diff --git a/mozilla/layout/style/nsStyleStruct.cpp b/mozilla/layout/style/nsStyleStruct.cpp
index 8e931facda5..514c2e2e145 100644
--- a/mozilla/layout/style/nsStyleStruct.cpp
+++ b/mozilla/layout/style/nsStyleStruct.cpp
@@ -1311,8 +1311,14 @@ nsChangeHint nsStyleTextReset::CalcDifference(const nsStyleTextReset& aOther) co
 {
   if (mVerticalAlign == aOther.mVerticalAlign
       && mUnicodeBidi == aOther.mUnicodeBidi) {
-    if (mTextDecoration != aOther.mTextDecoration)
-      return NS_STYLE_HINT_VISUAL;
+    if (mTextDecoration != aOther.mTextDecoration) {
+      // Reflow for blink changes, repaint for others
+      return
+        (mTextDecoration & NS_STYLE_TEXT_DECORATION_BLINK) ==
+        (aOther.mTextDecoration & NS_STYLE_TEXT_DECORATION_BLINK) ?
+          NS_STYLE_HINT_VISUAL : NS_STYLE_HINT_REFLOW;
+    }
+    
     return NS_STYLE_HINT_NONE;
   }
   return NS_STYLE_HINT_REFLOW;