diff --git a/test/Transforms/GVN/form-memset.ll b/test/Transforms/GVN/form-memset.ll
index a026cdef54f..b5c20f052b0 100644
--- a/test/Transforms/GVN/form-memset.ll
+++ b/test/Transforms/GVN/form-memset.ll
@@ -1,5 +1,5 @@
-; RUN: llvm-as < %s | opt -gvn | llvm-dis | not grep store
-; RUN: llvm-as < %s | opt -gvn | llvm-dis | grep llvm.memset
+; RUN: llvm-as < %s | opt -gvn -form-memset-from-stores | llvm-dis | not grep store
+; RUN: llvm-as < %s | opt -gvn -form-memset-from-stores| llvm-dis | grep llvm.memset
 
 ; All the stores in this example should be merged into a single memset.