diff --git a/modules/e11sync/default.nix b/modules/e11sync/default.nix
index 59209ce..24dcebb 100644
--- a/modules/e11sync/default.nix
+++ b/modules/e11sync/default.nix
@@ -36,7 +36,7 @@ e11sync-backend: {
             E11SYNC_SECRET_KEY_PATH = "/run/credentials/secret_key";
           };
           wantedBy = ["multi-user.target"];
-          serviceConfig =
+          serviceConfig = lib.mkMerge [
             {
               Type = "notify";
               NotifyAccess = "all";
@@ -53,9 +53,10 @@ e11sync-backend: {
               ProtectKernelTunables = true;
               ProtectControlGroups = true;
             }
-            // lib.mkIf cfg.migrateOnStart {
+            (lib.mkIf cfg.migrateOnStart {
               ExecStartPre = "${pkg-backend}/bin/e11sync migrate";
-            };
+            })
+          ];
         };
       };
     };