diff --git a/cmd/mvebu/comphy_rx_training.c b/cmd/mvebu/comphy_rx_training.c
index 25a9e15..4ee8f54 100644
--- a/cmd/mvebu/comphy_rx_training.c
+++ b/cmd/mvebu/comphy_rx_training.c
@@ -22,7 +22,7 @@
 
 	if (argc != 3) {
 		printf("missing arguments\n");
-		return -1;
+		return CMD_RET_USAGE;
 	}
 
 	cp_index = hextoul(argv[1], NULL);