diff --git a/MediaBrowser.Api/Library/LibraryHelpers.cs b/MediaBrowser.Api/Library/LibraryHelpers.cs
index 2e0afa4116..7e30ffc931 100644
--- a/MediaBrowser.Api/Library/LibraryHelpers.cs
+++ b/MediaBrowser.Api/Library/LibraryHelpers.cs
@@ -31,10 +31,15 @@ namespace MediaBrowser.Api.Library
/// The media folder does not exist
public static void RemoveMediaPath(IFileSystem fileSystem, string virtualFolderName, string mediaPath, IServerApplicationPaths appPaths)
{
+ if (string.IsNullOrWhiteSpace(mediaPath))
+ {
+ throw new ArgumentNullException("mediaPath");
+ }
+
var rootFolderPath = appPaths.DefaultUserViewsPath;
var path = Path.Combine(rootFolderPath, virtualFolderName);
- if (!fileSystem.DirectoryExists(path))
+ if (!fileSystem.DirectoryExists(path))
{
throw new DirectoryNotFoundException(string.Format("The media collection {0} does not exist", virtualFolderName));
}
@@ -56,7 +61,7 @@ namespace MediaBrowser.Api.Library
/// The app paths.
public static void AddMediaPath(IFileSystem fileSystem, string virtualFolderName, string path, IServerApplicationPaths appPaths)
{
- if (!string.IsNullOrWhiteSpace(path))
+ if (string.IsNullOrWhiteSpace(path))
{
throw new ArgumentNullException("path");
}