diff --git a/frappe/core/doctype/activity_log/activity_log.py b/frappe/core/doctype/activity_log/activity_log.py
index aa764ab002..81dd58f3bc 100644
--- a/frappe/core/doctype/activity_log/activity_log.py
+++ b/frappe/core/doctype/activity_log/activity_log.py
@@ -6,7 +6,7 @@ from frappe.core.utils import set_timeline_doc
 from frappe.model.document import Document
 from frappe.query_builder import DocType, Interval
 from frappe.query_builder.functions import Now
-from frappe.utils import get_fullname, now
+from frappe.utils import get_fullname, now, strip_html
 
 
 class ActivityLog(Document):
@@ -36,7 +36,7 @@ class ActivityLog(Document):
 	# end: auto-generated types
 
 	def before_insert(self):
-		self.full_name = get_fullname(self.user)
+		self.full_name = strip_html(get_fullname(self.user))
 		self.date = now()
 
 	def validate(self):