diff --git a/erpnext/accounts/doctype/pricing_rule/utils.py b/erpnext/accounts/doctype/pricing_rule/utils.py
index 5795b8f..bbabac4 100644
--- a/erpnext/accounts/doctype/pricing_rule/utils.py
+++ b/erpnext/accounts/doctype/pricing_rule/utils.py
@@ -382,7 +382,7 @@
 			`tab{child_doc}`.amount
 		FROM `tab{child_doc}`, `tab{parent_doc}`
 		WHERE
-			`tab{child_doc}`.parent = `tab{parent_doc}`.name and {date_field}
+			`tab{child_doc}`.parent = `tab{parent_doc}`.name and `tab{parent_doc}`.{date_field}
 			between %s and %s and `tab{parent_doc}`.docstatus = 1
 			{condition} group by `tab{child_doc}`.name
 	""".format(parent_doc = doctype,