diff --git a/src/modules/config.js b/src/modules/config.js
index acc71b80..f3452612 100644
--- a/src/modules/config.js
+++ b/src/modules/config.js
@@ -88,7 +88,7 @@ export const defaultState = {
   conversationTreeAdvanced: undefined, // instance default
   conversationOtherRepliesButton: undefined, // instance default
   conversationTreeFadeAncestors: undefined, // instance default
-  maxDepthInThread: 6
+  maxDepthInThread: undefined // instance default
 }
 
 // caching the instance default properties