diff --git a/lib/bind/port_after.h.in b/lib/bind/port_after.h.in
index a2e8a55de1..fe070e16db 100644
--- a/lib/bind/port_after.h.in
+++ b/lib/bind/port_after.h.in
@@ -1,6 +1,7 @@
 #ifndef port_after_h
 #define port_after_h
 
+#include <stdio.h>
 #include <sys/types.h>
 #include <sys/socket.h>
 #include <sys/param.h>