diff --git a/bin/tools/named-nzd2nzf.c b/bin/tools/named-nzd2nzf.c
index 65c3e6f6c8..f9bae77686 100644
--- a/bin/tools/named-nzd2nzf.c
+++ b/bin/tools/named-nzd2nzf.c
@@ -24,6 +24,8 @@
 #include <stdlib.h>
 #include <lmdb.h>
 
+#include <isc/print.h>
+
 int
 main (int argc, char *argv[]) {
 	int status;