diff --git a/drivers/tty/n_gsm.c b/drivers/tty/n_gsm.c
index 15be4a2357835..e440c7f6d20e0 100644
--- a/drivers/tty/n_gsm.c
+++ b/drivers/tty/n_gsm.c
@@ -1865,7 +1865,6 @@ static void gsm_queue(struct gsm_mux *gsm)
 			}
 		}
 		break;
-	case UA:
 	case UA|PF:
 		if (cr == 0 || dlci == NULL)
 			break;