diff --git a/iterator/iter_utils.c b/iterator/iter_utils.c
index 160274bdd..c7a3f4f52 100644
--- a/iterator/iter_utils.c
+++ b/iterator/iter_utils.c
@@ -62,6 +62,7 @@
 #include "validator/val_anchor.h"
 #include "validator/val_kcache.h"
 #include "validator/val_kentry.h"
+#include "validator/val_utils.h"
 
 /** time when nameserver glue is said to be 'recent' */
 #define SUSPICION_RECENT_EXPIRY 86400