diff --git a/src/node_env_var.cc b/src/node_env_var.cc
index 208bb6981c2dc8..5f543a5e76a1f9 100644
--- a/src/node_env_var.cc
+++ b/src/node_env_var.cc
@@ -286,7 +286,7 @@ Maybe<bool> KVStore::AssignFromObject(Local<Context> context,
 
     Local<Value> value;
     Local<String> value_string;
-    if (!entries->Get(context, key.As<String>()).ToLocal(&value) ||
+    if (!entries->Get(context, key).ToLocal(&value) ||
         !value->ToString(context).ToLocal(&value_string)) {
       return Nothing<bool>();
     }