diff --git a/sys/dev/ale/if_ale.c b/sys/dev/ale/if_ale.c
index 9537388d3e56..b5eb59756c4b 100644
--- a/sys/dev/ale/if_ale.c
+++ b/sys/dev/ale/if_ale.c
@@ -2932,7 +2932,7 @@ ale_stop_mac(struct ale_softc *sc)
 
 	reg = CSR_READ_4(sc, ALE_MAC_CFG);
 	if ((reg & (MAC_CFG_TX_ENB | MAC_CFG_RX_ENB)) != 0) {
-		reg &= ~MAC_CFG_TX_ENB | MAC_CFG_RX_ENB;
+		reg &= ~(MAC_CFG_TX_ENB | MAC_CFG_RX_ENB);
 		CSR_WRITE_4(sc, ALE_MAC_CFG, reg);
 	}