diff --git a/libc/include/string.h b/libc/include/string.h
index f6b4acf..10ff722 100644
--- a/libc/include/string.h
+++ b/libc/include/string.h
@@ -46,6 +46,8 @@
 
 extern char*  index(const char *, int) __purefunc;
 extern char*  strchr(const char *, int) __purefunc;
+extern char* __strchr_chk(const char *, int, size_t);
+
 extern char*  strrchr(const char *, int) __purefunc;
 
 extern size_t strlen(const char *) __purefunc;
@@ -238,8 +240,6 @@
     return __strlen_chk(s, bos);
 }
 
-extern char* __strchr_chk(const char *, int, size_t);
-
 __BIONIC_FORTIFY_INLINE
 char* strchr(const char *s, int c) {
     size_t bos = __bos(s);