diff --git a/samples/client/petstore/cpp-restsdk/client/include/CppRestPetstoreClient/ModelBase.h b/samples/client/petstore/cpp-restsdk/client/include/CppRestPetstoreClient/ModelBase.h
index 327dc5c0be2..d05468e43b9 100644
--- a/samples/client/petstore/cpp-restsdk/client/include/CppRestPetstoreClient/ModelBase.h
+++ b/samples/client/petstore/cpp-restsdk/client/include/CppRestPetstoreClient/ModelBase.h
@@ -244,7 +244,7 @@ bool ModelBase::fromJson( const web::json::value& val, std::vector<T> &outVal )
     bool ok = true;
     if (val.is_array())
     {
-        for (const auto jitem : val.as_array())
+        for (const web::json::value & jitem : val.as_array())
         {
             T item;
             ok &= fromJson(jitem, item);