diff --git a/erpnext/accounts/doctype/sales_invoice_item/sales_invoice_item.txt b/erpnext/accounts/doctype/sales_invoice_item/sales_invoice_item.txt
index acb1d95..debf171 100644
--- a/erpnext/accounts/doctype/sales_invoice_item/sales_invoice_item.txt
+++ b/erpnext/accounts/doctype/sales_invoice_item/sales_invoice_item.txt
@@ -238,7 +238,6 @@
 	# DocField
 	{
 		'colour': u'White:FFF',
-		'default': u'Purchase - TC',
 		'doctype': u'DocField',
 		'fieldname': u'cost_center',
 		'fieldtype': u'Link',
@@ -432,4 +431,4 @@
 		'print_hide': 1,
 		'report_hide': 1
 	}
-]
\ No newline at end of file
+]
diff --git a/erpnext/patches/patch_list.py b/erpnext/patches/patch_list.py
index 31c4aed..7d8a095 100644
--- a/erpnext/patches/patch_list.py
+++ b/erpnext/patches/patch_list.py
@@ -277,4 +277,9 @@
 		'patch_file': 'after_sync_cleanup',
 		'description': 'cleanup after sync'
 	},
+	{
+		'patch_module': 'patches.april_2012',
+		'patch_file': 'change_cacheitem_schema',
+		'description': 'Modified datatype of `value` column from text to longtext'
+	},
 ]