diff --git a/src/Cedar/Client.c b/src/Cedar/Client.c
index a5eaaf2c..7d8ca00b 100644
--- a/src/Cedar/Client.c
+++ b/src/Cedar/Client.c
@@ -431,7 +431,7 @@ void CiChangeAllVLanMacAddress(CLIENT *c)
 			RPC_CLIENT_ENUM_VLAN_ITEM *e = t.Items[i];
 			UCHAR mac[6];
 
-			if (StrToMac(mac, e->MacAddress) && mac[1] == 0xAC)
+			if (StrToMac(mac, e->MacAddress) && ((mac[0] == 0x00 && mac[1] == 0xAC) || (mac[0] = 0x5E)))
 			{
 				char *name = e->DeviceName;
 				RPC_CLIENT_SET_VLAN s;
diff --git a/src/Cedar/Virtual.c b/src/Cedar/Virtual.c
index f3ea20c3..af9f65e7 100644
--- a/src/Cedar/Virtual.c
+++ b/src/Cedar/Virtual.c
@@ -10306,12 +10306,12 @@ void GenMacAddress(UCHAR *mac)
 	Hash(hash, b->Buf, b->Size, true);
 
 	// Generate a MAC address
-	mac[0] = 0x00;
-	mac[1] = 0xAC;		// AC hurray
-	mac[2] = hash[0];
-	mac[3] = hash[1];
-	mac[4] = hash[2];
-	mac[5] = hash[3];
+	mac[0] = 0x5E;
+	mac[1] = hash[0];
+	mac[2] = hash[1];
+	mac[3] = hash[2];
+	mac[4] = hash[3];
+	mac[5] = hash[4];
 
 	FreeBuf(b);
 }
diff --git a/src/Mayaqua/Microsoft.c b/src/Mayaqua/Microsoft.c
index 6d6b9039..7c6d351a 100644
--- a/src/Mayaqua/Microsoft.c
+++ b/src/Mayaqua/Microsoft.c
@@ -10509,12 +10509,12 @@ void MsGenMacAddress(UCHAR *mac)
 
 	Hash(hash, hash_src, sizeof(hash_src), true);
 
-	mac[0] = 0x00;
-	mac[1] = 0xAC;
-	mac[2] = hash[0];
-	mac[3] = hash[1];
-	mac[4] = hash[2];
-	mac[5] = hash[3];
+	mac[0] = 0x5E;
+	mac[1] = hash[0];
+	mac[2] = hash[1];
+	mac[3] = hash[2];
+	mac[4] = hash[3];
+	mac[5] = hash[4];
 }
 
 // Finish the driver installation