diff --git a/test/Driver/as-w-option.c b/test/Driver/as-w-option.c
index 42d6df2..5277701 100644
--- a/test/Driver/as-w-option.c
+++ b/test/Driver/as-w-option.c
@@ -1,4 +1,4 @@
-// RUN: %clang -### %s -c -o tmp.o -fno-integrated-as -Wa,-W 2>&1 | FileCheck -check-prefix=CHECK-NOIAS %s
+// RUN: %clang -### %s -c -o tmp.o -fno-integrated-as --target=x86_64-linux-gnu -Wa,-W 2>&1 | FileCheck -check-prefix=CHECK-NOIAS %s
 // RUN: %clang -### %s -c -o tmp.o -integrated-as -Wa,-W 2>&1 | FileCheck -check-prefix=CHECK-IAS %s
 
 // CHECK-IAS: "-cc1" {{.*}} "-massembler-no-warn"