--- a/dom/indexedDB/ActorsParent.cpp
+++ b/dom/indexedDB/ActorsParent.cpp
@@ -3056,17 +3056,16 @@ public:
 
     return inputStream.forget();
   }
 
   void
   ClearInputStream()
   {
     AssertIsOnBackgroundThread();
-    MOZ_ASSERT(mBlobImpl);
 
     mBlobImpl = nullptr;
   }
 
 private:
   // Called when sending to the child.
   explicit DatabaseFile(FileInfo* aFileInfo)
     : mFileInfo(aFileInfo)