diff --git a/lib/Transforms/IPO/SimpleStructMutation.cpp b/lib/Transforms/IPO/SimpleStructMutation.cpp
index f2061ddb8f7..401677a8817 100644
--- a/lib/Transforms/IPO/SimpleStructMutation.cpp
+++ b/lib/Transforms/IPO/SimpleStructMutation.cpp
@@ -90,7 +90,7 @@ static void PruneTypes(const Type *Ty,
   //
   for (Type::subtype_iterator I = Ty->subtype_begin(), E = Ty->subtype_end();
        I != E; ++I) {
-    if (!isa<PointerType>(*I))
+    if (!isa<PointerType>(I->get()))
       PruneTypes(*I, TypesToModify, ProcessedTypes);
   }
 }