diff --git a/onnxruntime/python/tools/symbolic_shape_infer.py b/onnxruntime/python/tools/symbolic_shape_infer.py
index 79be553f74..148617e740 100755
--- a/onnxruntime/python/tools/symbolic_shape_infer.py
+++ b/onnxruntime/python/tools/symbolic_shape_infer.py
@@ -689,7 +689,7 @@ class SymbolicShapeInference:
                                           get_shape_from_sympy_shape(sympy_shape)))
 
     def _infer_Expand(self, node):
-        expand_to_shape = self._try_get_value(node, 1)
+        expand_to_shape = as_list(self._try_get_value(node, 1), keep_none=True)
         if expand_to_shape is not None:
             # new_shape's dim can come from shape value
             self._update_computed_dims(expand_to_shape)