1 files changed, 2 insertions, 0 deletions
diff --git a/input-keys.c b/input-keys.c
index 938c530f..224bcfa5 100644
--- a/input-keys.c
+++ b/input-keys.c
@@ -556,6 +556,8 @@ input_key(struct screen *s, struct bufferevent *bev, key_code key)
 	case KEYC_SHIFT|KEYC_META|KEYC_CTRL:
 		modifier = '8';
 		break;
+	default:
+		fatalx("invalid key modifiers: %llx", key);
 	}
 	xsnprintf(tmp, sizeof tmp, "\033[%llu;%cu", outkey, modifier);
 	bufferevent_write(bev, tmp, strlen(tmp));