Ambiguous match found when using reflection to find Generic method

I'm using reflection to find the generic method for Newtonsoft JsonConvert.DeserializedObject<T> but am finding that it's returning an ambiguous match for the non-generic version JsonConvert.DeserializeObject, here is the code which tries to get the generic method:

return typeof(JsonConvert).GetMethod("DeserializeObject", new Type[] { typeof(string) }).MakeGenericMethod(genericType);

I've specified that I want the method which takes a string as its only argument but both the generic and non-generic version have matching parameter lists, and I receive the ambiguous match error.

Is it possible to to get the generic version using GetMethod in this way? I know I can use Linq and GetMethods() to find it e.g:

var method = typeof(JsonConvert).GetMethods().FirstOrDefault(
            x => x.Name.Equals("DeserializeObject", StringComparison.OrdinalIgnoreCase) &&
            x.IsGenericMethod && x.GetParameters().Length == 1 &&
            x.GetParameters()[0].ParameterType == typeof(string));

But this is a bit cumbersome, there must be a better way.