diff --git a/NzbDrone.Common/DiskProvider.cs b/NzbDrone.Common/DiskProvider.cs
index 545d2ecea..4322f3d0d 100644
--- a/NzbDrone.Common/DiskProvider.cs
+++ b/NzbDrone.Common/DiskProvider.cs
@@ -52,14 +52,14 @@ namespace NzbDrone.Common
             return File.Exists(path);
         }
 
-        public virtual IEnumerable<string> GetDirectories(string path)
+        public virtual string[] GetDirectories(string path)
         {
-            return Directory.EnumerateDirectories(path);
+            return Directory.GetDirectories(path);
         }
 
-        public virtual IEnumerable<string> GetFiles(string path, SearchOption searchOption)
+        public virtual string[] GetFiles(string path, SearchOption searchOption)
         {
-            return Directory.EnumerateFiles(path, "*.*", searchOption);
+            return Directory.GetFiles(path, "*.*", searchOption);
         }
 
         public virtual long GetDirectorySize(string path)
diff --git a/NzbDrone.Core.Test/ProviderTests/PostDownloadProviderTests/ProcessDownloadProviderFixture.cs b/NzbDrone.Core.Test/ProviderTests/PostDownloadProviderTests/ProcessDownloadProviderFixture.cs
index 9c2b465dc..3e93a4493 100644
--- a/NzbDrone.Core.Test/ProviderTests/PostDownloadProviderTests/ProcessDownloadProviderFixture.cs
+++ b/NzbDrone.Core.Test/ProviderTests/PostDownloadProviderTests/ProcessDownloadProviderFixture.cs
@@ -267,7 +267,7 @@ namespace NzbDrone.Core.Test.ProviderTests.PostDownloadProviderTests
         [Test]
         public void ProcessDropFolder_should_only_process_folders_that_arent_known_series_folders()
         {
-            var subFolders = new List<string>
+            var subFolders = new []
                                  {
                                     @"c:\drop\episode1",
                                     @"c:\drop\episode2",
diff --git a/NzbDrone.Core.Test/ProviderTests/UpdateProviderTests/GetUpdateLogFixture.cs b/NzbDrone.Core.Test/ProviderTests/UpdateProviderTests/GetUpdateLogFixture.cs
index 7b7a44875..3bd737abf 100644
--- a/NzbDrone.Core.Test/ProviderTests/UpdateProviderTests/GetUpdateLogFixture.cs
+++ b/NzbDrone.Core.Test/ProviderTests/UpdateProviderTests/GetUpdateLogFixture.cs
@@ -23,7 +23,7 @@ namespace NzbDrone.Core.Test.ProviderTests.UpdateProviderTests
 
             Mocker.GetMock<DiskProvider>()
                 .Setup(c => c.GetFiles(UpdateLogFolder, SearchOption.TopDirectoryOnly))
-                .Returns(new List<string> 
+                .Returns(new [] 
                 {
                     "C:\\nzbdrone\\update\\2011.09.20-19-08.txt", 
                     "C:\\nzbdrone\\update\\2011.10.20-20-08.txt",