diff --git a/layout/base/nsCSSRendering.cpp b/layout/base/nsCSSRendering.cpp
index 458346d40d3..07fe1748890 100644
--- a/layout/base/nsCSSRendering.cpp
+++ b/layout/base/nsCSSRendering.cpp
@@ -4091,6 +4091,8 @@ nsImageRenderer::IsRasterImage()
 already_AddRefed<mozilla::layers::ImageContainer>
 nsImageRenderer::GetContainer()
 {
+  if (mType != eStyleImageType_Image)
+    return nsnull;
   nsCOMPtr<imgIContainer> img;
   nsresult rv = mImage->GetImageData()->GetImage(getter_AddRefs(img));
   if (NS_FAILED(rv) || !img)