diff --git a/mozilla/netwerk/cache/src/nsDiskCacheDevice.cpp b/mozilla/netwerk/cache/src/nsDiskCacheDevice.cpp
index 788dcd99496..841c01160a3 100644
--- a/mozilla/netwerk/cache/src/nsDiskCacheDevice.cpp
+++ b/mozilla/netwerk/cache/src/nsDiskCacheDevice.cpp
@@ -123,6 +123,7 @@ public:
     DiskCacheEntry()
         :   mDirty(PR_FALSE)
     {
+        NS_INIT_ISUPPORTS();
     }
 
     virtual ~DiskCacheEntry() {}
@@ -146,8 +147,7 @@ private:
     nsCOMPtr<nsITransport> mTransports[3];
     PRBool mDirty;
 };
-// NS_IMPL_ISUPPORTS0(DiskCacheEntry);
-NS_IMPL_THREADSAFE_ISUPPORTS0(DiskCacheEntry);
+NS_IMPL_ISUPPORTS0(DiskCacheEntry);
 
 static DiskCacheEntry*
 getDiskCacheEntry(nsCacheEntry * entry)