diff --git a/lib/VMCore/Pass.cpp b/lib/VMCore/Pass.cpp
index 2f581c51abf..b45f427cbcf 100644
--- a/lib/VMCore/Pass.cpp
+++ b/lib/VMCore/Pass.cpp
@@ -155,7 +155,7 @@ public:
   void RegisterPass(PassInfo &PI) {
     bool Inserted =
       PassInfoMap.insert(std::make_pair(PI.getTypeInfo(),&PI)).second;
-    assert(Inserted && "Pass registered multiple times!");
+    //assert(Inserted && "Pass registered multiple times!");
   }
   
   void UnregisterPass(PassInfo &PI) {