diff -Naur pysmbc-1.0.15.8.orig/smbc/context.c pysmbc-1.0.15.8/smbc/context.c
--- pysmbc-1.0.15.8.orig/smbc/context.c	2017-08-08 18:59:13.000000000 +0300
+++ pysmbc-1.0.15.8/smbc/context.c	2018-05-09 16:40:18.041794647 +0300
@@ -141,8 +141,8 @@
       self->auth_fn = auth;
     }
 	
-  debugprintf ("-> Setting  client max protocol to SMB3()\n");
-  lp_set_cmdline("client max protocol", "SMB3");
+  debugprintf ("-> Setting  client max protocol to NT1()\n");
+  lp_set_cmdline("client max protocol", "NT1");
 
   debugprintf ("-> Context_init ()\n");