diff --git a/inc/webclient.h b/inc/webclient.h
index ae6f103..c63eeb7 100644
--- a/inc/webclient.h
+++ b/inc/webclient.h
@@ -73,10 +73,6 @@ extern "C" {
 #define web_strdup                      rt_strdup
 #endif
 
-#ifndef web_strndup
-#define web_strndup                     rt_strndup
-#endif
-
 #define WEBCLIENT_SW_VERSION           "2.3.0"
 #define WEBCLIENT_SW_VERSION_NUM       0x20300
 
diff --git a/src/webclient_file.c b/src/webclient_file.c
index 2ad98f1..fbf5fe1 100644
--- a/src/webclient_file.c
+++ b/src/webclient_file.c
@@ -10,6 +10,8 @@
 
 #include <stdint.h>
 #include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
 
 #include <rtthread.h>
 #include <webclient.h>