Update rename_field_max_days_allowed.py
diff --git a/erpnext/patches/v11_0/rename_field_max_days_allowed.py b/erpnext/patches/v11_0/rename_field_max_days_allowed.py
index bdf87f4..e0acf06 100644
--- a/erpnext/patches/v11_0/rename_field_max_days_allowed.py
+++ b/erpnext/patches/v11_0/rename_field_max_days_allowed.py
@@ -3,5 +3,5 @@
 
 def execute():
 	frappe.reload_doc("hr", "doctype", "leave_type")
-	frappe.db.sql("""ALTER table `tabLeave Type` modify max_days_allowed int(8) NOT NULL""")
-	rename_field("Leave Type", "max_days_allowed", "max_continuous_days_allowed") 
\ No newline at end of file
+	frappe.db.sql_ddl("""ALTER table `tabLeave Type` modify max_days_allowed int(8) NOT NULL""")
+	rename_field("Leave Type", "max_days_allowed", "max_continuous_days_allowed")