diff --git a/onnxruntime/core/graph/function_impl.h b/onnxruntime/core/graph/function_impl.h
index 5df32a05a6..3ac1541bdc 100644
--- a/onnxruntime/core/graph/function_impl.h
+++ b/onnxruntime/core/graph/function_impl.h
@@ -21,9 +21,9 @@ class FunctionImpl final : public Function {
   FunctionImpl(const onnxruntime::Graph& graph,
                const onnxruntime::NodeIndex& node_index,
                const ONNX_NAMESPACE::FunctionProto* onnx_func);
-  
-  ~FunctionImpl();
-  
+
+  ~FunctionImpl() override;
+
   const ONNX_NAMESPACE::OpSchema& OpSchema() const override;
 
   const onnxruntime::Graph& Body() const override;
diff --git a/onnxruntime/core/graph/graph.cc b/onnxruntime/core/graph/graph.cc
index 6a1d950cf2..e60a042a23 100644
--- a/onnxruntime/core/graph/graph.cc
+++ b/onnxruntime/core/graph/graph.cc
@@ -1677,7 +1677,7 @@ Status Graph::VerifyNodeAndOpMatch() {
     // default value defined in operator definition if needed.
     // Fill node attribute with default value specified in operator definition if any.
     auto node_attributes = node.GetAttributes();
-    for (auto attr_def : p_op->attributes()) {
+    for (const auto& attr_def : p_op->attributes()) {
       auto node_attr_iter = node_attributes.find(attr_def.first);
       if (node_attributes.end() == node_attr_iter) {
         // The attribute was not specified in the node.