diff --git a/components/libc/minilibc/string.h b/components/libc/minilibc/string.h
index 4bfec8fecdc1f485271e2c3a886103fe005121af..089903e9933d461704bc3e885162295a2ac5ebc2 100644
--- a/components/libc/minilibc/string.h
+++ b/components/libc/minilibc/string.h
@@ -66,6 +66,8 @@ char*strtok_r(char*s, const char*delim, char**ptrptr);
 size_t strcspn(const char *s, const char *reject);
 size_t strspn (const char *s, const char *accept);
 
+long strtol(const char *str, char **endptr, int base);
+long long strtoll(const char *str, char **endptr, int base);
 #endif
 
 #endif