diff --git a/extensions/mattermost/src/mattermost/slash-http.ts b/extensions/mattermost/src/mattermost/slash-http.ts
index 1bc9d18773e..3428a8d18c3 100644
--- a/extensions/mattermost/src/mattermost/slash-http.ts
+++ b/extensions/mattermost/src/mattermost/slash-http.ts
@@ -152,7 +152,7 @@ async function authorizeSlashInvocation(params: {
       ? channelType?.toUpperCase() === "G"
         ? "group"
         : "channel"
-      : "direct";
+      : "channel";
 
   const chatType = kind === "direct" ? "direct" : kind === "group" ? "group" : "channel";