diff --git a/src/gateway/server-plugins.subagent-ended-hook.test.ts b/src/gateway/server-plugins.subagent-ended-hook.test.ts
index de277fec593b..c6504006306f 100644
--- a/src/gateway/server-plugins.subagent-ended-hook.test.ts
+++ b/src/gateway/server-plugins.subagent-ended-hook.test.ts
@@ -269,6 +269,7 @@ describe("createGatewaySubagentRuntime.run subagent_ended tracking (#59164)", ()
       pluginId: "memory-core",
       isWebchatConnect: () => false,
     } satisfies PluginRuntimeGatewayRequestScope;
+    serverPlugins.setFallbackGatewayContext(scope.context);
 
     await gatewayScope.withPluginRuntimeGatewayRequestScope(scope, () =>
       runtime.run({