diff --git a/openpype/pipeline/publish/publish_plugins.py b/openpype/pipeline/publish/publish_plugins.py
index 249b5180f3..b60b9f43a7 100644
--- a/openpype/pipeline/publish/publish_plugins.py
+++ b/openpype/pipeline/publish/publish_plugins.py
@@ -20,6 +20,10 @@ class PublishValidationError(Exception):
 
 
 class KnownPublishError(Exception):
+    """Publishing crashed because of known error.
+
+    Message will be shown in UI for artist.
+    """
     pass