1 files changed, 8 insertions, 2 deletions
diff --git a/libc/test/src/string/memchr_test.cpp b/libc/test/src/string/memchr_test.cpp
index 4a7c88bfe6e1..ede841118fe0 100644
--- a/libc/test/src/string/memchr_test.cpp
+++ b/libc/test/src/string/memchr_test.cpp
@@ -6,11 +6,15 @@
 //
 //===----------------------------------------------------------------------===//
 
-#include "hdr/signal_macros.h"
 #include "src/string/memchr.h"
-#include "test/UnitTest/Test.h"
+
 #include <stddef.h>
 
+#include "hdr/signal_macros.h"
+#include "test/UnitTest/Test.h"
+
+namespace {
+
 // A helper function that calls memchr and abstracts away the explicit cast for
 // readability purposes.
 const char *call_memchr(const void *src, int c, size_t size) {
@@ -130,3 +134,5 @@ TEST(LlvmLibcMemChrTest, CrashOnNullPtr) {
 }
 
 #endif // defined(LIBC_ADD_NULL_CHECKS)
+
+} // namespace