diff --git a/upstart-jobs/xserver/default.nix b/upstart-jobs/xserver/default.nix
index 0a7a70c71750..33f7542ad04d 100644
--- a/upstart-jobs/xserver/default.nix
+++ b/upstart-jobs/xserver/default.nix
@@ -545,7 +545,9 @@ mkIf cfg.enable {
            }
 
           ${cfg.displayManager.job.beforeScript}
-          
+
+          rm -f /tmp/.X0-lock
+
         end script
 
         ${cfg.displayManager.job.env}