diff --git a/src/terminal/event.c b/src/terminal/event.c
index 71f3950e..2032e0eb 100644
--- a/src/terminal/event.c
+++ b/src/terminal/event.c
@@ -256,7 +256,7 @@ handle_interlink_event(struct terminal *term, struct term_event *ev)
 
 		reset_timer();
 
-		if (check_kbd_modifier(ev, KBD_MOD_CTRL) && toupper(key) == 'L') {
+		if (check_kbd_modifier(ev, KBD_MOD_CTRL) && (key == 'l' || key == 'L')) {
 			redraw_terminal_cls(term);
 			break;