diff --git a/test/Tooling/auto-detect-from-source-parent.cpp b/test/Tooling/auto-detect-from-source-parent.cpp
index cb5fd56..ea7eb15 100644
--- a/test/Tooling/auto-detect-from-source-parent.cpp
+++ b/test/Tooling/auto-detect-from-source-parent.cpp
@@ -6,3 +6,5 @@
 
 // CHECK: C++ requires
 invalid;
+
+// REQUIRES: shell