diff --git a/frappe/model/rename_doc.py b/frappe/model/rename_doc.py
index 4bc3ac2040..a0cc8cc62d 100644
--- a/frappe/model/rename_doc.py
+++ b/frappe/model/rename_doc.py
@@ -89,7 +89,7 @@ def rename_parent_and_child(doctype, old, new, meta):
 
 def validate_rename(doctype, new, meta, merge, force, ignore_permissions):
 	# using for update so that it gets locked and someone else cannot edit it while this rename is going on!
-	exists = frappe.db.sql("select name from `tab{doctype}` where name=%s for update".format(doctype=frappe.db.escape(doctype)), new)
+	exists = frappe.db.sql("select name from `tab{doctype}` where name=%s COLLATE utf8mb4_bin for update".format(doctype=frappe.db.escape(doctype)), new)
 	exists = exists[0][0] if exists else None
 
 	if merge and not exists: