diff --git a/libc/bionic/pthread_attr.cpp b/libc/bionic/pthread_attr.cpp
index 3c4b169..1551c1f 100644
--- a/libc/bionic/pthread_attr.cpp
+++ b/libc/bionic/pthread_attr.cpp
@@ -30,13 +30,13 @@
 
 #include <inttypes.h>
 #include <stdio.h>
+#include <string.h>
 #include <sys/resource.h>
 #include <unistd.h>
 
 #include <async_safe/log.h>
 
 #include "private/bionic_defs.h"
-#include "private/bionic_string_utils.h"
 #include "private/ErrnoRestorer.h"
 #include "pthread_internal.h"
 
diff --git a/libc/private/bionic_string_utils.h b/libc/private/bionic_string_utils.h
deleted file mode 100644
index ab0eccf..0000000
--- a/libc/private/bionic_string_utils.h
+++ /dev/null
@@ -1,31 +0,0 @@
-/*
- * Copyright (C) 2014 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef _BIONIC_STRING_UTILS_H_
-#define _BIONIC_STRING_UTILS_H_
-
-#include <string.h>
-
-static inline bool ends_with(const char* s1, const char* s2) {
-  size_t s1_length = strlen(s1);
-  size_t s2_length = strlen(s2);
-  if (s2_length > s1_length) {
-    return false;
-  }
-  return memcmp(s1 + (s1_length - s2_length), s2, s2_length) == 0;
-}
-
-#endif // _BIONIC_STRING_UTILS_H_