diff --git a/flake.nix b/flake.nix
index cafbc77..ba055c7 100644
--- a/flake.nix
+++ b/flake.nix
@@ -375,6 +375,14 @@
                 {
                   Unit = {
                     Description = "sims status bar";
+                    # Start as part of the graphical session rather than at
+                    # user-manager boot. The compositor populates the systemd
+                    # user environment (WAYLAND_DISPLAY, NIXOS_OZONE_WL, ...)
+                    # via `import-environment` before it activates
+                    # graphical-session.target, so binding here guarantees sims
+                    # — and every app it launches via `systemd-run --scope` —
+                    # inherits the correct Wayland environment.
+                    PartOf = [ "graphical-session.target" ];
                     After = [ "graphical-session.target" ];
                   };
 
@@ -384,7 +392,7 @@
                   };
 
                   Install = {
-                    WantedBy = [ "default.target" ];
+                    WantedBy = [ "graphical-session.target" ];
                   };
                 };
             };