diff --git a/include/string.h b/include/string.h
index 4fc89e9468266f843c38d11e9593eef09b097304..fdbc5009d77a40229e99b3d2a7cb44a0412ebde9 100644
--- a/include/string.h
+++ b/include/string.h
@@ -75,6 +75,7 @@ char *strchrnul(const char *, int);
 char *strcasestr(const char *, const char *);
 char *strsep(char **, const char *);
 void *memrchr(const void *, int, size_t);
+void *mempcpy(void *, void *, size_t)
 #endif
 
 #ifdef __cplusplus