--- a/image/src/RasterImage.cpp
+++ b/image/src/RasterImage.cpp
@@ -930,20 +930,19 @@ RasterImage::OnAddedFrame(uint32_t aNewF
       // mid-decode, and thus we're decoding out of the source buffer. Since we're
       // going to fix this anyway later, and since we didn't kill the source data
       // in the old world either, locking is acceptable for the moment.
       LockImage();
 
       if (mPendingAnimation && ShouldAnimate()) {
         StartAnimation();
       }
-
-      if (aNewFrameCount > 1) {
-        mAnim->UnionFirstFrameRefreshArea(aNewRefreshArea);
-      }
+    }
+    if (aNewFrameCount > 1) {
+      mAnim->UnionFirstFrameRefreshArea(aNewRefreshArea);
     }
   }
 }
 
 nsresult
 RasterImage::SetSize(int32_t aWidth, int32_t aHeight, Orientation aOrientation)
 {
   MOZ_ASSERT(NS_IsMainThread());