diff --git a/frappe/core/doctype/custom_field/custom_field.py b/frappe/core/doctype/custom_field/custom_field.py
index 0180b996cf..852786f914 100644
--- a/frappe/core/doctype/custom_field/custom_field.py
+++ b/frappe/core/doctype/custom_field/custom_field.py
@@ -33,10 +33,10 @@ class CustomField(Document):
 		# validate field
 		from frappe.core.doctype.doctype.doctype import validate_fields_for_doctype
 
-		validate_fields_for_doctype(self.dt)
-
 		frappe.clear_cache(doctype=self.dt)
 
+		validate_fields_for_doctype(self.dt)
+
 		# create property setter to emulate insert after
 		self.create_property_setter()