diff --git a/image/RasterImage.cpp b/image/RasterImage.cpp
index 4a5c1a5e9867..b10238bfb062 100644
--- a/image/RasterImage.cpp
+++ b/image/RasterImage.cpp
@@ -955,6 +955,8 @@ RasterImage::SetMetadata(const ImageMetadata& aMetadata,
   if (aMetadata.HasSize()) {
     IntSize size = aMetadata.GetSize();
     if (size.width < 0 || size.height < 0) {
+      NS_WARNING("Image has negative intrinsic size");
+      DoError();
       return;
     }