diff --git a/superset/commands/dataset/update.py b/superset/commands/dataset/update.py
index 5c0d87b230eff..b1c3fead4e58f 100644
--- a/superset/commands/dataset/update.py
+++ b/superset/commands/dataset/update.py
@@ -87,10 +87,11 @@ def validate(self) -> None:
 
         database_id = self._properties.get("database", None)
         table_name = self._properties.get("table_name", None)
+        schema_name = self._properties.get("schema_name", None)
         # Validate uniqueness
         if not DatasetDAO.validate_update_uniqueness(
             self._model.database_id,
-            self._model.schema,
+            schema_name,
             self._model_id,
             table_name,
         ):