diff --git a/chown.c b/chown.c
index a36307d..0455c22 100644
--- a/chown.c
+++ b/chown.c
@@ -26,6 +26,7 @@ main(int argc, char *argv[])
 	char *owner, *group;
 
 	ARGBEGIN {
+	case 'R':
 	case 'r':
 		rflag = true;
 		break;