diff --git a/kdc/kdc_locl.h b/kdc/kdc_locl.h
index 03d95903e..49140d02b 100644
--- a/kdc/kdc_locl.h
+++ b/kdc/kdc_locl.h
@@ -21,6 +21,7 @@
 #include <netinet/in.h>
 #include <netdb.h>
 
+#include <roken.h>
 #include "hdb.h"
 
 extern struct timeval now;