diff --git a/usr.bin/tr/tr.c b/usr.bin/tr/tr.c
index 883f59a49878..033b75cb5300 100644
--- a/usr.bin/tr/tr.c
+++ b/usr.bin/tr/tr.c
@@ -266,7 +266,7 @@ main(int argc, char **argv)
 		 */
 		s2.str = argv[1];
 		s2.state = NORMAL;
-		for (cnt = 0; cnt <= WINT_MAX; cnt++) {
+		for (cnt = 0; cnt < WINT_MAX; cnt++) {
 			if (Cflag && !iswrune(cnt))
 				continue;
 			if (cmap_lookup(map, cnt) == OOBCH) {