diff --git a/start-vnc b/start-vnc
index c5a1dcd8ecd2291afdecbc7f6b86e9efac6b1520..3d873cd64de81c69c817a240ec1fa743014ac059 100755
--- a/start-vnc
+++ b/start-vnc
@@ -246,7 +246,7 @@ ${sbatch_resources}
 #SBATCH --parsable
 #SBATCH --dkrzepilog=0
 cd \${HOME}
-/opt/TurboVNC/bin/vncserver -fg -geometry "${SVNC_GEOMETRY}" -localhost
+/opt/TurboVNC/bin/vncserver -fg -geometry "${SVNC_GEOMETRY}" -localhost -securitytypes none
 EOF
 }