diff --git a/rdesktop.c b/rdesktop.c
index 350756a..d7c74f3 100644
--- a/rdesktop.c
+++ b/rdesktop.c
@@ -182,11 +182,11 @@ usage(char *program)
 	fprintf(stderr, "         '-r sound:[local|off|remote]': enable sound redirection\n");
 	fprintf(stderr, "                     remote would leave sound on server\n");
 	fprintf(stderr,
-		"         '-r clipboard:[on|off|auto|PRIMARYCLIPBOARD|CLIPBOARD]': enable clip-\n");
-	fprintf(stderr, "                      board redirection.\n");
+		"         '-r clipboard:[off|PRIMARYCLIPBOARD|CLIPBOARD]': enable clipboard\n");
+	fprintf(stderr, "                      redirection.\n");
 	fprintf(stderr,
-		"                      'on|auto|PRIMARYCLIPBOARD' looks at both PRIMARY and\n");
-	fprintf(stderr, "                      CLIPBOARD when sending data to server.\n");
+		"                      'PRIMARYCLIPBOARD' looks at both PRIMARY and CLIPBOARD\n");
+	fprintf(stderr, "                      when sending data to server.\n");
 	fprintf(stderr, "                      'CLIPBOARD' looks at only CLIPBOARD.\n");
 	fprintf(stderr, "   -0: attach to console\n");
 	fprintf(stderr, "   -4: use RDP version 4\n");
diff --git a/xclip.c b/xclip.c
index a5c3607..407b9aa 100644
--- a/xclip.c
+++ b/xclip.c
@@ -1112,8 +1112,7 @@ ui_clip_set_mode(const char *optarg)
 {
 	g_rdpclip = True;
 
-	if (str_startswith(optarg, "auto") || str_startswith(optarg, "on")
-	    || str_startswith(optarg, "PRIMARYCLIPBOARD"))
+	if (str_startswith(optarg, "PRIMARYCLIPBOARD"))
 		auto_mode = True;
 	else if (str_startswith(optarg, "CLIPBOARD"))
 		auto_mode = False;