diff --git a/clang/test/Driver/defsym.s b/clang/test/Driver/defsym.s
index 2530ef970d6c..7ce110e51c2d 100644
--- a/clang/test/Driver/defsym.s
+++ b/clang/test/Driver/defsym.s
@@ -2,7 +2,7 @@
 // RUN: -Wa,-defsym,abc=5 -Wa,-defsym,xyz=0xa \
 // RUN: 2>&1 | FileCheck %s --check-prefix=CHECK-DEFSYM1
 
-// RUN: %clang -### -c -no-integrated-as %s \
+// RUN: %clang -### -c -no-integrated-as -target x86_64-unknown-unknown %s \
 // RUN: -Wa,-defsym,abc=5 -Wa,-defsym,xyz=0xa \
 // RUN: 2>&1 | FileCheck %s --check-prefix=CHECK-DEFSYM1