diff --git a/layout/svg/SVGObserverUtils.cpp b/layout/svg/SVGObserverUtils.cpp
index d9e37b710049..1e2a06d8435f 100644
--- a/layout/svg/SVGObserverUtils.cpp
+++ b/layout/svg/SVGObserverUtils.cpp
@@ -539,7 +539,9 @@ class BackgroundClipRenderingObserver : public SVGRenderingObserver {
   NS_DECL_ISUPPORTS
 
  private:
-  virtual ~BackgroundClipRenderingObserver() { StopObserving(); }
+  // We do not call StopObserving() since the observing and observed element
+  // are the same element (and because we could crash - see bug 1556441).
+  virtual ~BackgroundClipRenderingObserver() = default;
 
   Element* GetReferencedElementWithoutObserving() final {
     return mFrame->GetContent()->AsElement();