diff --git a/frappe/patches.txt b/frappe/patches.txt
index b085379e09..50ba7b6ec3 100644
--- a/frappe/patches.txt
+++ b/frappe/patches.txt
@@ -235,4 +235,5 @@ frappe.patches.v11_0.delete_all_prepared_reports
 frappe.patches.v11_0.fix_order_by_in_reports_json
 execute:frappe.delete_doc('Page', 'applications', ignore_missing=True)
 frappe.patches.v11_0.set_missing_creation_and_modified_value_for_user_permissions
-frappe.patches.v11_0.remove_doctype_user_permissions_for_page_and_report #2019-05-01
\ No newline at end of file
+frappe.patches.v11_0.remove_doctype_user_permissions_for_page_and_report #2019-05-01
+frappe.patches.v11_0.apply_customization _to_custom_doctype
\ No newline at end of file
diff --git a/frappe/patches/v11_0/apply_customization_to_custom_doctype.py b/frappe/patches/v11_0/apply_customization_to_custom_doctype.py
new file mode 100644
index 0000000000..574097090d
--- /dev/null
+++ b/frappe/patches/v11_0/apply_customization_to_custom_doctype.py
@@ -0,0 +1,52 @@
+import frappe
+from frappe.utils import cint
+
+# This patch aims to apply & delete all the customization
+# on custom doctypes done through customize form
+
+# This is required because customize form in now blocked
+# for custom doctypes and user may not be able to
+# see previous customization
+
+def execute():
+	custom_doctypes = frappe.get_all('DocType', filters={
+		'custom': 1
+	})
+
+	for doctype in custom_doctypes:
+		property_setters = frappe.get_all('Property Setter', filters={
+			'doc_type': doctype.name,
+			'doctype_or_field': 'DocField'
+		}, fields=['name', 'property', 'value', 'property_type', 'field_name'])
+
+		custom_fields = frappe.get_all('Custom Field',
+			filters={'dt': doctype.name},
+			fields=['*']
+		)
+
+		property_setters_map = {}
+
+		for property in property_setters:
+			property_setters_map[property.field_name] = property
+			frappe.db.sql('DELETE FROM `tabProperty Setter` WHERE `name`=%s', property.name)
+
+		meta = frappe.get_doc('DocType', doctype.name)
+
+		for df in meta.fields:
+			ps = property_setters_map.get(df.fieldname, None)
+			if ps:
+				value = cint(ps.value) if ps.property_type == 'Int' else ps.value
+				df.set(ps.property, value)
+
+		for cf in custom_fields:
+			df = frappe.new_doc('DocField', meta, 'fields')
+			cf.pop('parenttype')
+			cf.pop('parentfield')
+			cf.pop('parent')
+			cf.pop('name')
+			df.update(cf)
+			meta.fields.append(df)
+			frappe.db.sql('DELETE FROM `tabCustom Field` WHERE name=%s', cf.name)
+
+		meta.save()
+