diff --git a/clang/test/Driver/dragonfly.c b/clang/test/Driver/dragonfly.c
index 11d730f55bd9d..931f23f6f57b5 100644
--- a/clang/test/Driver/dragonfly.c
+++ b/clang/test/Driver/dragonfly.c
@@ -1,5 +1,4 @@
-// RUN: %clang --target=x86_64-pc-dragonfly -### %s 2> %t.log
-// RUN: FileCheck -input-file %t.log %s
+// RUN: %clang --target=x86_64-pc-dragonfly --sysroot= -### %s 2>&1 | FileCheck %s
 
 // CHECK: "-cc1" "-triple" "x86_64-pc-dragonfly"
 // CHECK: ld{{.*}}" "--eh-frame-hdr" "-dynamic-linker" "/usr/libexec/ld-elf.so.{{.*}}" "--hash-style=gnu" "--enable-new-dtags" "-o" "a.out" "{{.*}}crt1.o" "{{.*}}crti.o" "{{.*}}crtbegin.o" "-L{{.*}}/../lib" "-L/usr/lib" "-L/usr/lib/gcc80" "{{.*}}.o" "-rpath" "{{.*}}gcc80{{.*}}" "-lc" "-lgcc" "{{.*}}crtend.o" "{{.*}}crtn.o"