diff --git a/tests/test1.c b/tests/test1.c
index 7e41610..4d29601 100644
--- a/tests/test1.c
+++ b/tests/test1.c
@@ -5,6 +5,8 @@
 #include <stdlib.h>
 #include <string.h>
 
+#include "config.h"
+
 #include "json.h"
 #include "parse_flags.h"