diff --git a/libvncclient/rfbproto.c b/libvncclient/rfbproto.c
index d10e8a6..d424b04 100644
--- a/libvncclient/rfbproto.c
+++ b/libvncclient/rfbproto.c
@@ -559,11 +559,6 @@ ReadSupportedSecurityType(rfbClient* client, uint32_t *result, rfbBool subAuth)
         ReadReason(client);
         return FALSE;
     }
-    if (count>sizeof(tAuth))
-    {
-        rfbClientLog("%d security types are too many; maximum is %d\n", count, sizeof(tAuth));
-        return FALSE;
-    }
 
     rfbClientLog("We have %d security types to read\n", count);
     authScheme=0;
@@ -573,7 +568,7 @@ ReadSupportedSecurityType(rfbClient* client, uint32_t *result, rfbBool subAuth)
         if (!ReadFromRFBServer(client, (char *)&tAuth[loop], 1)) return FALSE;
         rfbClientLog("%d) Received security type %d\n", loop, tAuth[loop]);
         if (flag) continue;
-        if (tAuth[loop]==rfbVncAuth || tAuth[loop]==rfbNoAuth || tAuth[loop]==rfbMSLogon ||
+        if (tAuth[loop]==rfbVncAuth || tAuth[loop]==rfbNoAuth ||
             tAuth[loop]==rfbARD ||
             (!subAuth && (tAuth[loop]==rfbTLS || tAuth[loop]==rfbVeNCrypt)))
         {