diff --git a/clang/test/PCH/modified-header-error.c b/clang/test/PCH/modified-header-error.c
index 6335fb1b4539..ef9249447a15 100644
--- a/clang/test/PCH/modified-header-error.c
+++ b/clang/test/PCH/modified-header-error.c
@@ -9,3 +9,4 @@
 #include "header2.h"
 
 // CHECK: fatal error: file {{.*}} has been modified since the precompiled header was built
+// REQUIRES: shell