diff --git a/erpnext/selling/doctype/customer/test_customer.py b/erpnext/selling/doctype/customer/test_customer.py
index e2273bc..a1db1ce 100644
--- a/erpnext/selling/doctype/customer/test_customer.py
+++ b/erpnext/selling/doctype/customer/test_customer.py
@@ -41,11 +41,23 @@
 			self.assertEquals(value, details.get(key))
 
 	def test_rename(self):
+		comment = frappe.new_doc("Comment")
+		comment.update({
+			"comment": "Test Comment for Rename",
+			"comment_doctype": "Customer",
+			"comment_docname": "_Test Customer 1"
+		})
+		comment.insert()
+
 		frappe.rename_doc("Customer", "_Test Customer 1", "_Test Customer 1 Renamed")
 
 		self.assertTrue(frappe.db.exists("Customer", "_Test Customer 1 Renamed"))
 		self.assertFalse(frappe.db.exists("Customer", "_Test Customer 1"))
 
+		# test that comment gets renamed
+		self.assertEquals(frappe.db.get_value("Comment",
+			{"comment_doctype": "Customer", "comment_docname": "Test Customer 1 Renamed"}), comment.name)
+
 		frappe.rename_doc("Customer", "_Test Customer 1 Renamed", "_Test Customer 1")