diff --git a/erpnext/patches/v8_0/create_domain_docs.py b/erpnext/patches/v8_0/create_domain_docs.py
index 2f376db..cdd3117 100644
--- a/erpnext/patches/v8_0/create_domain_docs.py
+++ b/erpnext/patches/v8_0/create_domain_docs.py
@@ -21,7 +21,7 @@
 	condition = ""
 	company = erpnext.get_default_company()
 	if company:
-		condition = " and name='{0}'".format(company)
+		condition = " and name='{0}'".format(frappe.db.escape(company))
 
 	domains = frappe.db.sql_list("select distinct domain from `tabCompany` where domain != 'Other' {0}".format(condition))
 
diff --git a/erpnext/patches/v8_0/move_perpetual_inventory_setting.py b/erpnext/patches/v8_0/move_perpetual_inventory_setting.py
index 594a15c..78322d4 100644
--- a/erpnext/patches/v8_0/move_perpetual_inventory_setting.py
+++ b/erpnext/patches/v8_0/move_perpetual_inventory_setting.py
@@ -10,4 +10,4 @@
 	for data in frappe.get_all('Company', fields = ["name"]):
 		doc = frappe.get_doc('Company', data.name)
 		doc.enable_perpetual_inventory = enabled
-		doc.save(ignore_permissions=True)
\ No newline at end of file
+		doc.db_update()
\ No newline at end of file
diff --git a/erpnext/patches/v8_0/save_system_settings.py b/erpnext/patches/v8_0/save_system_settings.py
index d91e4c1..d479ece 100644
--- a/erpnext/patches/v8_0/save_system_settings.py
+++ b/erpnext/patches/v8_0/save_system_settings.py
@@ -3,6 +3,7 @@
 
 from __future__ import unicode_literals
 import frappe
+from frappe.utils import cint
 
 def execute():
 	"""
@@ -10,6 +11,10 @@
 	"""
 
 	frappe.reload_doc("core", "doctype", "system_settings")
-	doc = frappe.get_doc("System Settings", "System Settings")
+	doc = frappe.get_doc("System Settings")
 	doc.flags.ignore_mandatory = True
+
+	if cint(doc.currency_precision) == 0:
+		doc.currency_precision = ''
+
 	doc.save(ignore_permissions=True)