diff --git a/src/runtime/contrib/dnnl/dnnl_json_runtime.cc b/src/runtime/contrib/dnnl/dnnl_json_runtime.cc
index c2747d1458579..a79537f46e744 100644
--- a/src/runtime/contrib/dnnl/dnnl_json_runtime.cc
+++ b/src/runtime/contrib/dnnl/dnnl_json_runtime.cc
@@ -441,8 +441,7 @@ class DNNLJSONRuntime : public JSONRuntimeBase {
 
 runtime::Module DNNLJSONRuntimeCreate(String symbol_name, String graph_json,
                                       const Array<String>& const_names) {
-  auto n = make_object<DNNLJSONRuntime>(symbol_name.operator std::string(),
-                                        graph_json.operator std::string(), const_names);
+  auto n = make_object<DNNLJSONRuntime>(symbol_name, graph_json, const_names);
   return runtime::Module(n);
 }
 
diff --git a/src/runtime/contrib/json/json_runtime.h b/src/runtime/contrib/json/json_runtime.h
index a2769568cf043..c4f126e8ccba9 100644
--- a/src/runtime/contrib/json/json_runtime.h
+++ b/src/runtime/contrib/json/json_runtime.h
@@ -204,7 +204,7 @@ class JSONRuntimeBase : public ModuleNode {
    */
   void SetupConstants(const Array<NDArray>& consts) {
     for (size_t i = 0; i < consts.size(); ++i) {
-      data_entry_[const_idx_[i]] = consts[i].operator->();
+      data_entry_[EntryID(const_idx_[i], 0)] = consts[i].operator->();
     }
   }
 
@@ -253,9 +253,9 @@ class JSONRuntimeBase : public ModuleNode {
   std::vector<JSONGraphNodeEntry> outputs_;
   /*! \brief Data of that entry. */
   std::vector<const DLTensor*> data_entry_;
-  /*! \brief Map the input name to index. */
+  /*! \brief Map the input name to node index. */
   std::vector<uint32_t> input_var_idx_;
-  /*! \brief input const index. */
+  /*! \brief input const node index. */
   std::vector<uint32_t> const_idx_;
   /*! \brief Indicate if the engine has been initialized. */
   bool initialized_{false};
diff --git a/tests/python/relay/test_json_runtime.py b/tests/python/relay/test_json_runtime.py
index d15468c6a9423..a886692c58386 100644
--- a/tests/python/relay/test_json_runtime.py
+++ b/tests/python/relay/test_json_runtime.py
@@ -53,7 +53,7 @@ def check_result(mod,
 
     # Run the reference result
     compile_engine.get().clear()
-    with relay.build_config(opt_level=3):
+    with tvm.transform.PassContext(opt_level=3):
         json, lib, param = relay.build(ref_mod, target=target, params=params)
     rt_mod = tvm.contrib.graph_runtime.create(json, lib, ctx)