diff --git a/superset/connectors/sqla/models.py b/superset/connectors/sqla/models.py
index afc390f9dd02a..c65df0209a82b 100644
--- a/superset/connectors/sqla/models.py
+++ b/superset/connectors/sqla/models.py
@@ -394,7 +394,7 @@ def values_for_column(self, column_name, limit=10000):
         qry = (
             select([target_col.sqla_col])
             .select_from(self.get_from_clause(tp, db_engine_spec))
-            .distinct(column_name)
+            .distinct()
         )
         if limit:
             qry = qry.limit(limit)