diff --git a/vpn/compose.yml b/vpn/compose.yml
index f9dcf69..0815b0c 100755
--- a/vpn/compose.yml
+++ b/vpn/compose.yml
@@ -18,6 +18,7 @@ services:
   debian-vnc-xfce-firefox-g3:
     container_name: debian-xfce-firefox
     image: accetto/debian-vnc-xfce-firefox-g3
+    shm_size: '512m'
     depends_on:
       - gluetun
     network_mode: "service:gluetun"