diff --git a/src/plugins/loader.ts b/src/plugins/loader.ts
index 5b6c4cc936a..63625f6eccd 100644
--- a/src/plugins/loader.ts
+++ b/src/plugins/loader.ts
@@ -554,7 +554,7 @@ function setCachedPluginRegistry(
 
 function getReusableCachedPluginRegistry(params: {
   cacheKey: string;
-  onlyPluginIds: string[];
+  onlyPluginIds?: string[];
   runtimeSubagentMode: "default" | "explicit" | "gateway-bindable";
   options: PluginLoadOptions;
 }):