diff --git a/mozilla/extensions/auth/nsAuthModuleGSSAPI.cpp b/mozilla/extensions/auth/nsAuthModuleGSSAPI.cpp
index f48b21e8eaf..d6dec9c4370 100644
--- a/mozilla/extensions/auth/nsAuthModuleGSSAPI.cpp
+++ b/mozilla/extensions/auth/nsAuthModuleGSSAPI.cpp
@@ -220,7 +220,7 @@ gssInit()
     }
 #ifdef XP_MACOSX
     if (gssNativeImp &&
-            !((PRFuncPtr)KLCacheHasValidTickets_ptr =
+            !(KLCacheHasValidTicketsPtr =
                PR_FindFunctionSymbol(lib, "KLCacheHasValidTickets"))) {
         LOG(("Fail to load KLCacheHasValidTickets function from gssapi library\n"));
         PR_UnloadLibrary(lib);