diff --git a/clang/test/Lexer/string-literal-errors.cpp b/clang/test/Lexer/string-literal-errors.cpp
index be574c2..d8e2993 100644
--- a/clang/test/Lexer/string-literal-errors.cpp
+++ b/clang/test/Lexer/string-literal-errors.cpp
@@ -1,4 +1,4 @@
-// RUN: %clang_cc1 -fsyntax-only %s 2>&1 | FileCheck -strict-whitespace %s
+// RUN: not %clang_cc1 -fsyntax-only %s 2>&1 | FileCheck -strict-whitespace %s
 
 void foo() {
   (void)"\q \u123z \x \U \U123 \U12345 \u123 \xyzzy \777 \U"