diff --git a/frappe/model/db_query.py b/frappe/model/db_query.py
index 8d13b9cb20..7ed681644f 100644
--- a/frappe/model/db_query.py
+++ b/frappe/model/db_query.py
@@ -302,7 +302,7 @@ class DatabaseQuery(object):
 		# add tables from fields
 		if self.fields:
 			for field in self.fields:
-				if ("tab" not in field and "." not in field) or any(x for x in sql_functions if x in field):
+				if not ("tab" in field and "." in field) or any(x for x in sql_functions if x in field):
 					continue
 
 				table_name = field.split('.')[0]