diff --git a/metricflow/dataset/convert_semantic_model.py b/metricflow/dataset/convert_semantic_model.py
index 63e106b729..12c0886f14 100644
--- a/metricflow/dataset/convert_semantic_model.py
+++ b/metricflow/dataset/convert_semantic_model.py
@@ -49,7 +49,6 @@
     SqlStringExpression,
 )
 from metricflow.sql.sql_plan import (
-    SqlQueryPlanNode,
     SqlSelectColumn,
     SqlSelectStatementNode,
     SqlTableFromClauseNode,
@@ -492,7 +491,6 @@ def create_sql_source_data_set(self, semantic_model: SemanticModel) -> SemanticM
             all_select_columns.extend(select_columns)
 
         # Generate the "from" clause depending on whether it's an SQL query or an SQL table.
-        from_source: Optional[SqlQueryPlanNode] = None
         from_source = SqlTableFromClauseNode(sql_table=SqlTable.from_string(semantic_model.node_relation.relation_name))
 
         select_statement_node = SqlSelectStatementNode(