diff --git a/libc/test/src/string/strnlen_test.cpp b/libc/test/src/string/strnlen_test.cpp
index 9d8616bc8bd7d..b15ec2f8cef2e 100644
--- a/libc/test/src/string/strnlen_test.cpp
+++ b/libc/test/src/string/strnlen_test.cpp
@@ -1,4 +1,4 @@
-//===-- Unittests for strnlen----------------------------------------------===//
+//===-- Unittests for strnlen ---------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
 // See https://llvm.org/LICENSE.txt for license information.