diff --git a/src/stores/streaming.js b/src/stores/streaming.js
index 1b4d07292..9233124b5 100644
--- a/src/stores/streaming.js
+++ b/src/stores/streaming.js
@@ -131,7 +131,7 @@ export const useStreamingStore = defineStore('streaming', {
     },
 
     getSubArgs(stream) {
-      if (stream === undefined) return undefined
+      if (stream === undefined) return []
       const argumentKey = ARGUMENT_MAP[stream.name]
       const args = argumentKey
         ? {