diff --git a/src/tools/http_upload.c b/src/tools/http_upload.c
index 5254009c..fc41ec5e 100644
--- a/src/tools/http_upload.c
+++ b/src/tools/http_upload.c
@@ -34,6 +34,8 @@
 
 #define _GNU_SOURCE 1
 
+#include "config.h"
+
 #include <stdlib.h>
 #include <stdio.h>
 #include <string.h>