diff --git a/drivers/char/n_r3964.c b/drivers/char/n_r3964.c
index 6934025..c1d8b54 100644
--- a/drivers/char/n_r3964.c
+++ b/drivers/char/n_r3964.c
@@ -602,7 +602,7 @@
 		}
 		break;
 	case R3964_WAIT_FOR_RX_REPEAT:
-		/* FALLTROUGH */
+		/* FALLTHROUGH */
 	case R3964_IDLE:
 		if (c == STX) {
 			/* Prevent rx_queue from overflow: */