diff --git a/test/CFrontend/exact-div-expr.c b/test/CFrontend/exact-div-expr.c
index 03626c92652..9dce922f953 100644
--- a/test/CFrontend/exact-div-expr.c
+++ b/test/CFrontend/exact-div-expr.c
@@ -1,5 +1,5 @@
-// RUN: %llvmgcc -S %s -o - -O | grep ashr
-// RUN: %llvmgcc -S %s -o - -O | not grep sdiv
+// RUN: %llvmgcc -S %s -o - -O1 | grep ashr
+// RUN: %llvmgcc -S %s -o - -O1 | not grep sdiv
 
 long long test(int *A, int *B) {
   return A-B;