diff --git a/linkhash.c b/linkhash.c
index a5b2945..989980c 100644
--- a/linkhash.c
+++ b/linkhash.c
@@ -10,6 +10,8 @@
  *
  */
 
+#include "config.h"
+
 #include <stdio.h>
 #include <string.h>
 #include <stdlib.h>