diff --git a/usr.bin/resizewin/resizewin.c b/usr.bin/resizewin/resizewin.c
index b6df862b8a49..e53364cf1254 100644
--- a/usr.bin/resizewin/resizewin.c
+++ b/usr.bin/resizewin/resizewin.c
@@ -101,7 +101,7 @@ main(int argc, char **argv)
 	if (tcsetattr(fd, TCSAFLUSH, &new) == -1)
 		exit(1);
 
-	if (write(fd, query, sizeof(query)) != sizeof(query)) {
+	if (write(fd, query, sizeof(query) - 1) != sizeof(query) - 1) {
 		error = 1;
 		goto out;
 	}