diff --git a/sys/dev/ae/if_ae.c b/sys/dev/ae/if_ae.c
index 6108f8192b7b..b8870561ddea 100644
--- a/sys/dev/ae/if_ae.c
+++ b/sys/dev/ae/if_ae.c
@@ -1660,7 +1660,7 @@ ae_stop_rxmac(ae_softc_t *sc)
 	/*
 	 * Wait for IDLE state.
 	 */
-	for (i = 0; i < AE_IDLE_TIMEOUT; i--) {
+	for (i = 0; i < AE_IDLE_TIMEOUT; i++) {
 		val = AE_READ_4(sc, AE_IDLE_REG);
 		if ((val & (AE_IDLE_RXMAC | AE_IDLE_DMAWRITE)) == 0)
 			break;