diff --git a/usr.bin/colldef/parse.y b/usr.bin/colldef/parse.y
index 375aed8ac3e0..0cd657481f36 100644
--- a/usr.bin/colldef/parse.y
+++ b/usr.bin/colldef/parse.y
@@ -30,6 +30,7 @@
 __FBSDID("$FreeBSD$");
 
 #include <arpa/inet.h>
+#include <sys/types.h>
 #include <err.h>
 #include <stdarg.h>
 #include <stdio.h>
diff --git a/usr.bin/colldef/scan.l b/usr.bin/colldef/scan.l
index aeeff1406832..dbc0eec83574 100644
--- a/usr.bin/colldef/scan.l
+++ b/usr.bin/colldef/scan.l
@@ -36,6 +36,7 @@ __FBSDID("$FreeBSD$");
 #include <unistd.h>
 #include <string.h>
 #include <sysexits.h>
+#include <sys/types.h>
 #include "common.h"
 #include "y.tab.h"