diff --git a/SpotifyAPI.Web/Models/Request/PlaylistGetItemsRequest.cs b/SpotifyAPI.Web/Models/Request/PlaylistGetItemsRequest.cs
index a175e032..32907c22 100644
--- a/SpotifyAPI.Web/Models/Request/PlaylistGetItemsRequest.cs
+++ b/SpotifyAPI.Web/Models/Request/PlaylistGetItemsRequest.cs
@@ -38,7 +38,7 @@ namespace SpotifyAPI.Web
     /// </summary>
     /// <value></value>
     [QueryParam("fields")]
-    public IList<string> Fields { get; }
+    public List<string> Fields { get; }
 
     /// <summary>
     /// The maximum number of items to return. Default: 100. Minimum: 1. Maximum: 100.
diff --git a/SpotifyAPI.Web/Models/Request/PlaylistGetRequest.cs b/SpotifyAPI.Web/Models/Request/PlaylistGetRequest.cs
index 558ed9dd..96391911 100644
--- a/SpotifyAPI.Web/Models/Request/PlaylistGetRequest.cs
+++ b/SpotifyAPI.Web/Models/Request/PlaylistGetRequest.cs
@@ -26,7 +26,7 @@ namespace SpotifyAPI.Web
     /// </summary>
     /// <value></value>
     [QueryParam("fields")]
-    public IList<string> Fields { get; }
+    public List<string> Fields { get; }
 
     /// <summary>
     /// An ISO 3166-1 alpha-2 country code or the string from_token.