diff --git a/frappe/core/doctype/comment/comment.py b/frappe/core/doctype/comment/comment.py
index c241c862bc..dd2d8e53e2 100644
--- a/frappe/core/doctype/comment/comment.py
+++ b/frappe/core/doctype/comment/comment.py
@@ -115,7 +115,7 @@ def update_comment_in_doc(doc):
 		}"""
 
 	# only comments get updates, not likes, assignments etc.
-	if self.comment_type != 'Comment':
+	if doc.comment_type != 'Comment':
 		return
 
 	def get_truncated(content):