diff --git a/README.org b/README.org
index 9187b10..2f2d42b 100644
--- a/README.org
+++ b/README.org
@@ -403,6 +403,7 @@ X11, or X[fn:13] is the generic name for the X Window System Display Server. All
     ];
     extraInit = ''
       export XAUTHORITY=/tmp/Xauthority
+      export xserverauthfile=$XAUTHORITY
       [ -e ~/.Xauthority ] && mv -f ~/.Xauthority "$XAUTHORITY"
     '';
   };
diff --git a/modules/x11.nix b/modules/x11.nix
index f757dfb..15ba5c1 100644
--- a/modules/x11.nix
+++ b/modules/x11.nix
@@ -16,6 +16,7 @@
     ];
     extraInit = ''
       export XAUTHORITY=/tmp/Xauthority
+      export xserverauthfile=$XAUTHORITY
       [ -e ~/.Xauthority ] && mv -f ~/.Xauthority "$XAUTHORITY"
     '';
   };