diff --git a/library/Pokedex/PokedexRecordBase.cs b/library/Pokedex/PokedexRecordBase.cs
index 1e39dbbc..36ead274 100644
--- a/library/Pokedex/PokedexRecordBase.cs
+++ b/library/Pokedex/PokedexRecordBase.cs
@@ -11,7 +11,6 @@ namespace PkmnFoundations.Pokedex
     {
         internal PokedexRecordBase(Pokedex pokedex)
         {
-            if (pokedex == null) throw new ArgumentNullException("pokedex");
             m_pokedex = pokedex;
             m_lazy_pairs = new List<ILazyKeyValuePair<int, object>>();
         }