diff --git a/clang/test/Driver/mbig-obj.c b/clang/test/Driver/mbig-obj.c
index 77e8cef7000a..8e0106d5ff17 100644
--- a/clang/test/Driver/mbig-obj.c
+++ b/clang/test/Driver/mbig-obj.c
@@ -1,9 +1,6 @@
-// RUN: %clang --target=x86_64-windows -c -Wa,-mbig-obj %s 2>&1 | FileCheck %s --check-prefix=WINDOWS
-// RUN: %clang --target=x86_64-windows -c -Xassembler -mbig-obj %s 2>&1 | FileCheck %s --check-prefix=WINDOWS
-// RUN: not %clang --target=x86_64-linux -c -Wa,-mbig-obj %s 2>&1 | FileCheck %s --check-prefix=LINUX
-// RUN: not %clang --target=x86_64-linux -c -Xassembler -mbig-obj %s 2>&1 | FileCheck %s --check-prefix=LINUX
+// RUN: %clang --target=x86_64-windows -c -Wa,-mbig-obj %s -### 2>&1 | FileCheck %s --check-prefix=WINDOWS
+// RUN: %clang --target=x86_64-windows -c -Xassembler -mbig-obj %s -### 2>&1 | FileCheck %s --check-prefix=WINDOWS
+// RUN: %clang --target=x86_64-linux -c -Wa,-mbig-obj %s -### 2>&1 | FileCheck %s --check-prefix=LINUX
+// RUN: %clang --target=x86_64-linux -c -Xassembler -mbig-obj %s -### 2>&1 | FileCheck %s --check-prefix=LINUX
 // WINDOWS-NOT: argument unused during compilation
 // LINUX: unsupported argument '-mbig-obj' to option '{{(Wa,|Xassembler)}}'
-#ifdef _WIN32
-#warning "produce non-empty output for FileCheck"
-#endif