diff --git a/NzbDrone.Update/UpdateEngine/InstallUpdateService.cs b/NzbDrone.Update/UpdateEngine/InstallUpdateService.cs
index ffafff691..13626a3c7 100644
--- a/NzbDrone.Update/UpdateEngine/InstallUpdateService.cs
+++ b/NzbDrone.Update/UpdateEngine/InstallUpdateService.cs
@@ -64,6 +64,7 @@ namespace NzbDrone.Update.UpdateEngine
 
                 try
                 {
+                    _diskProvider.DeleteFolder(installationFolder, true);
                     _diskProvider.CopyFolder(_appFolderInfo.GetUpdatePackageFolder(), installationFolder);
                 }
                 catch (Exception e)