diff --git a/sys/pci/if_ste.c b/sys/pci/if_ste.c
index 2458c4470fc2..b68ccddce843 100644
--- a/sys/pci/if_ste.c
+++ b/sys/pci/if_ste.c
@@ -583,8 +583,10 @@ static void ste_setmulti(sc)
 	}
 
 	/* first, zot all the existing hash bits */
-	CSR_WRITE_4(sc, STE_MAR0, 0);
-	CSR_WRITE_4(sc, STE_MAR1, 0);
+	CSR_WRITE_2(sc, STE_MAR0, 0);
+	CSR_WRITE_2(sc, STE_MAR1, 0);
+	CSR_WRITE_2(sc, STE_MAR2, 0);
+	CSR_WRITE_2(sc, STE_MAR3, 0);
 
 	/* now program new ones */
 	TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) {
@@ -597,8 +599,10 @@ static void ste_setmulti(sc)
 			hashes[1] |= (1 << (h - 32));
 	}
 
-	CSR_WRITE_4(sc, STE_MAR0, hashes[0]);
-	CSR_WRITE_4(sc, STE_MAR1, hashes[1]);
+	CSR_WRITE_2(sc, STE_MAR0, hashes[0] & 0xFFFF);
+	CSR_WRITE_2(sc, STE_MAR1, (hashes[0] >> 16) & 0xFFFF);
+	CSR_WRITE_2(sc, STE_MAR2, hashes[1] & 0xFFFF);
+	CSR_WRITE_2(sc, STE_MAR3, (hashes[1] >> 16) & 0xFFFF);
 	STE_CLRBIT1(sc, STE_RX_MODE, STE_RXMODE_ALLMULTI);
 	STE_SETBIT1(sc, STE_RX_MODE, STE_RXMODE_MULTIHASH);
 
diff --git a/sys/pci/if_stereg.h b/sys/pci/if_stereg.h
index 6081ec093db0..b369d6d673e6 100644
--- a/sys/pci/if_stereg.h
+++ b/sys/pci/if_stereg.h
@@ -88,7 +88,9 @@
 #define STE_TX_RECLAIM_THRESH	0x5D
 #define STE_PHYCTL		0x5E
 #define STE_MAR0		0x60
-#define STE_MAR1		0x64
+#define STE_MAR1		0x62
+#define STE_MAR2		0x64
+#define STE_MAR3		0x66
 #define STE_STATS		0x68
 
 #define STE_DMACTL_RXDMA_STOPPED	0x00000001