diff --git a/sys/dev/re/if_re.c b/sys/dev/re/if_re.c
index 85a973b491f..5ef8995f750 100644
--- a/sys/dev/re/if_re.c
+++ b/sys/dev/re/if_re.c
@@ -2411,7 +2411,7 @@ re_init_locked(sc)
 
 	mii_mediachg(mii);
 
-	CSR_WRITE_1(sc, RL_CFG1, RL_CFG1_DRVLOAD|RL_CFG1_FULLDUPLEX);
+	CSR_WRITE_1(sc, RL_CFG1, CSR_READ_1(sc, RL_CFG1) | RL_CFG1_DRVLOAD);
 
 	ifp->if_drv_flags |= IFF_DRV_RUNNING;
 	ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;