diff --git a/services/sync/modules/service.sys.mjs b/services/sync/modules/service.sys.mjs
index 4f4efe572909441abdd81909282936702c225621..2b47a2c9e97cf87641a0be9814f9a6be4d43f6ea 100644
--- a/services/sync/modules/service.sys.mjs
+++ b/services/sync/modules/service.sys.mjs
@@ -99,6 +99,10 @@ function getEngineModules() {
     whenTrue: "ExtensionStorageEngineKinto",
     whenFalse: "ExtensionStorageEngineBridge",
   };
+  result.Spaces = {
+    module: "resource:///modules/zen/ZenSpacesSync.sys.mjs",
+    symbol: "ZenSpacesSyncEngine",
+  };
   return result;
 }