diff --git a/frappe/core/doctype/communication/mixins.py b/frappe/core/doctype/communication/mixins.py
index 52ea93d829..24b6a8fafb 100644
--- a/frappe/core/doctype/communication/mixins.py
+++ b/frappe/core/doctype/communication/mixins.py
@@ -216,7 +216,7 @@ class CommunicationEmailMixin:
 			"reference_name": self.reference_name,
 			"reference_type": self.reference_doctype,
 		}
-		
+
 		if self.reference_doctype and self.reference_name:
 			return ToDo.get_owners(filters)
 		else: