diff --git a/frappe/patches/v7_2/merge_knowledge_base.py b/frappe/patches/v7_2/merge_knowledge_base.py
index 24b4dcda54..2eb52acfd6 100644
--- a/frappe/patches/v7_2/merge_knowledge_base.py
+++ b/frappe/patches/v7_2/merge_knowledge_base.py
@@ -10,6 +10,16 @@ def execute():
 		update_routes(['Help Category', 'Help Article'])
 		remove_from_installed_apps('knowledge_base')
 
+		# remove desktop icon
+		desktop_icon_name = frappe.db.get_value('Desktop Icon',
+			dict(module_name='Knowledge Base', type='module'))
+		if desktop_icon_name:
+			frappe.delete_doc('Desktop Icon', desktop_icon_name)
+
+		# remove module def
+		if frappe.db.exists('Module Def', 'Knowledge Base'):
+			frappe.delete_doc('Module Def', 'Knowledge Base')
+
 		# set missing routes
 		for doctype in ('Help Category', 'Help Article'):
 			for d in frappe.get_all(doctype, fields=['name', 'route']):