diff --git a/src/NzbDrone.Core/Indexers/Definitions/Rarbg/Rarbg.cs b/src/NzbDrone.Core/Indexers/Definitions/Rarbg/Rarbg.cs
index 8a5086063..1ed3cd692 100644
--- a/src/NzbDrone.Core/Indexers/Definitions/Rarbg/Rarbg.cs
+++ b/src/NzbDrone.Core/Indexers/Definitions/Rarbg/Rarbg.cs
@@ -33,7 +33,7 @@ namespace NzbDrone.Core.Indexers.Rarbg
 
         public override IIndexerRequestGenerator GetRequestGenerator()
         {
-            return new RarbgRequestGenerator(_tokenProvider) { Settings = Settings, BaseUrl = BaseUrl };
+            return new RarbgRequestGenerator(_tokenProvider) { Settings = Settings, Categories = Capabilities.Categories, BaseUrl = BaseUrl };
         }
 
         public override IParseIndexerResponse GetParser()
diff --git a/src/NzbDrone.Core/Indexers/Definitions/Rarbg/RarbgRequestGenerator.cs b/src/NzbDrone.Core/Indexers/Definitions/Rarbg/RarbgRequestGenerator.cs
index 6a2e8d5a1..da27d83e7 100644
--- a/src/NzbDrone.Core/Indexers/Definitions/Rarbg/RarbgRequestGenerator.cs
+++ b/src/NzbDrone.Core/Indexers/Definitions/Rarbg/RarbgRequestGenerator.cs
@@ -14,6 +14,7 @@ namespace NzbDrone.Core.Indexers.Rarbg
 
         public string BaseUrl { get; set; }
         public RarbgSettings Settings { get; set; }
+        public IndexerCapabilitiesCategories Categories { get; set; }
 
         public RarbgRequestGenerator(IRarbgTokenProvider tokenProvider)
         {
@@ -52,9 +53,11 @@ namespace NzbDrone.Core.Indexers.Rarbg
                 requestBuilder.AddQueryParam("ranked", "0");
             }
 
-            if (categories != null && categories.Length > 0)
+            var cats = Categories.MapTorznabCapsToTrackers(categories);
+
+            if (cats != null && cats.Count > 0)
             {
-                var categoryParam = string.Join(";", categories.Distinct());
+                var categoryParam = string.Join(";", cats.Distinct());
                 requestBuilder.AddQueryParam("category", categoryParam);
             }