diff --git a/erpnext/accounts/doctype/pricing_rule/pricing_rule.py b/erpnext/accounts/doctype/pricing_rule/pricing_rule.py
index da9650e..8728ac9 100644
--- a/erpnext/accounts/doctype/pricing_rule/pricing_rule.py
+++ b/erpnext/accounts/doctype/pricing_rule/pricing_rule.py
@@ -175,7 +175,7 @@
 			if parent_groups:
 				if allow_blank: parent_groups.append('')
 				condition = " ifnull("+field+", '') in ('" + \
-					"', '".join([d.replace("'", "\\'").replace('"', '\\"') for d in parent_groups])+"')"
+					"', '".join([d.replace("'", "\\'").replace('"', '\\"').replace("%", "%%") for d in parent_groups])+"')"
 		return condition