diff --git a/documentation/user_slack/add.md b/documentation/user_slack/add.md
index 99740647..69d73840 100644
--- a/documentation/user_slack/add.md
+++ b/documentation/user_slack/add.md
@@ -9,4 +9,4 @@ You have to register new account on our [Spectrum 2 Web Interface](https://slack
Following is the video showing whole process:
-
+