diff --git a/lib/dns/nta.c b/lib/dns/nta.c
index f48b5424d4..d508509278 100644
--- a/lib/dns/nta.c
+++ b/lib/dns/nta.c
@@ -21,6 +21,7 @@
 #include <isc/buffer.h>
 #include <isc/log.h>
 #include <isc/mem.h>
+#include <isc/print.h>
 #include <isc/rwlock.h>
 #include <isc/string.h>
 #include <isc/task.h>