diff --git a/src/images/SkImageRef.cpp b/src/images/SkImageRef.cpp
index 0865c88..cff57aa 100644
--- a/src/images/SkImageRef.cpp
+++ b/src/images/SkImageRef.cpp
@@ -163,6 +163,7 @@
     buffer.read((void*)fStream->getMemoryBase(), length);
 
     fPrev = fNext = NULL;
+    fFactory = NULL;
 }
 
 void SkImageRef::flatten(SkFlattenableWriteBuffer& buffer) const {