diff --git a/src/webclient.c b/src/webclient.c
index 021bcc1..e1238bc 100644
--- a/src/webclient.c
+++ b/src/webclient.c
@@ -14,6 +14,9 @@
  * 2018-08-07     chenyong     modify header processing
  */
 
+#include <stdio.h>
+#include <stdlib.h>
+
 #include <string.h>
 #include <sys/time.h>