diff --git a/gfx/layers/RotatedBuffer.cpp b/gfx/layers/RotatedBuffer.cpp
index 946c230d9abb..8476c16b2ad0 100644
--- a/gfx/layers/RotatedBuffer.cpp
+++ b/gfx/layers/RotatedBuffer.cpp
@@ -301,17 +301,9 @@ RotatedContentBuffer::BufferContentType()
 bool
 RotatedContentBuffer::BufferSizeOkFor(const nsIntSize& aSize)
 {
-  if (aSize == mBufferRect.Size()) {
-    return true;
-  }
-
-  if (SizedToVisibleBounds != mBufferSizePolicy &&
-      aSize < mBufferRect.Size()) {
-    return (aSize.width * 2 > mBufferRect.width) &&
-           (aSize.height * 2 > mBufferRect.height);
-  }
-
-  return false;
+  return (aSize == mBufferRect.Size() ||
+          (SizedToVisibleBounds != mBufferSizePolicy &&
+           aSize < mBufferRect.Size()));
 }
 
 bool
@@ -511,9 +503,8 @@ RotatedContentBuffer::BeginPaint(ThebesLayer* aLayer,
   // or call CreateBuffer before this call.
   FinalizeFrame(result.mRegionToDraw);
 
-  if (result.mRegionToDraw.IsEmpty()) {
+  if (result.mRegionToDraw.IsEmpty())
     return result;
-  }
 
   nsIntRect drawBounds = result.mRegionToDraw.GetBounds();
   RefPtr<DrawTarget> destDTBuffer;
@@ -623,7 +614,7 @@ RotatedContentBuffer::BeginPaint(ThebesLayer* aLayer,
       mBufferRotation = nsIntPoint(0,0);
     }
   } else {
-    // The buffer's not big enough or the buffer needs to shrink, so allocate a new one
+    // The buffer's not big enough, so allocate a new one
     CreateBuffer(result.mContentType, destBufferRect, bufferFlags,
                  &destDTBuffer, &destDTBufferOnWhite);
     if (!destDTBuffer) {