--- a/image/src/VectorImage.cpp
+++ b/image/src/VectorImage.cpp
@@ -297,16 +297,17 @@ VectorImage::VectorImage(imgStatusTracke
   mIsDrawing(false),
   mHaveAnimations(false),
   mHaveRestrictedRegion(false)
 {
 }
 
 VectorImage::~VectorImage()
 {
+  CancelAllListeners();
 }
 
 //------------------------------------------------------------------------------
 // Methods inherited from Image.h
 
 nsresult
 VectorImage::Init(const char* aMimeType,
                   uint32_t aFlags)
@@ -894,19 +895,16 @@ VectorImage::OnSVGDocumentParsed()
     // notified that the SVG finished loading, so we need to treat this as an error.
     OnSVGDocumentError();
   }
 }
 
 void
 VectorImage::CancelAllListeners()
 {
-  NS_ABORT_IF_FALSE(mParseCompleteListener, "Should have the parse complete listener");
-  NS_ABORT_IF_FALSE(mLoadEventListener, "Should have the load event listener");
-
   if (mParseCompleteListener) {
     mParseCompleteListener->Cancel();
     mParseCompleteListener = nullptr;
   }
   if (mLoadEventListener) {
     mLoadEventListener->Cancel();
     mLoadEventListener = nullptr;
   }