diff --git a/NzbDrone.Common.Test/EnsureTest/PathExtensionFixture.cs b/NzbDrone.Common.Test/EnsureTest/PathExtensionFixture.cs
new file mode 100644
index 0000000000..7d75b62b95
--- /dev/null
+++ b/NzbDrone.Common.Test/EnsureTest/PathExtensionFixture.cs
@@ -0,0 +1,19 @@
+using System;
+using FluentAssertions;
+using Moq;
+using NUnit.Framework;
+using NzbDrone.Common.EnsureThat;
+using NzbDrone.Test.Common;
+
+namespace NzbDrone.Common.Test.EnsureTest
+{
+    [TestFixture]
+    public class PathExtensionFixture : TestBase
+    {
+        [TestCase(@"p:\TV Shows\file with, comma.mkv")]
+        public void EnsureWindowsPath(string path)
+        {
+            Ensure.That(() => path).IsValidPath();
+        }
+    }
+}
diff --git a/NzbDrone.Common.Test/NzbDrone.Common.Test.csproj b/NzbDrone.Common.Test/NzbDrone.Common.Test.csproj
index 7c23c43069..16a8b7a4ea 100644
--- a/NzbDrone.Common.Test/NzbDrone.Common.Test.csproj
+++ b/NzbDrone.Common.Test/NzbDrone.Common.Test.csproj
@@ -81,6 +81,7 @@
     <Compile Include="CacheTests\CachedManagerFixture.cs" />
     <Compile Include="CacheTests\CachedFixture.cs" />
     <Compile Include="ConfigFileProviderTest.cs" />
+    <Compile Include="EnsureTest\PathExtensionFixture.cs" />
     <Compile Include="EventingTests\MessageAggregatorCommandTests.cs" />
     <Compile Include="EventingTests\MessageAggregatorEventTests.cs" />
     <Compile Include="ReflectionExtensions.cs" />
diff --git a/NzbDrone.Common/EnsureThat/EnsureStringExtensions.cs b/NzbDrone.Common/EnsureThat/EnsureStringExtensions.cs
index d9def3064f..734b5cb96d 100644
--- a/NzbDrone.Common/EnsureThat/EnsureStringExtensions.cs
+++ b/NzbDrone.Common/EnsureThat/EnsureStringExtensions.cs
@@ -96,7 +96,7 @@ public static Param<string> IsRelativePath(this Param<string> param)
             return param;
         }
 
-        private static readonly Regex windowsInvalidPathRegex = new Regex(@"[/,*,<,>,"",|]", RegexOptions.Compiled | RegexOptions.IgnoreCase);
+        private static readonly Regex windowsInvalidPathRegex = new Regex(@"[/*<>""|]", RegexOptions.Compiled | RegexOptions.IgnoreCase);
         private static readonly Regex windowsPathRegex = new Regex(@"^[a-z]:\\", RegexOptions.Compiled | RegexOptions.IgnoreCase);
 
         [DebuggerStepThrough]
diff --git a/NzbDrone.Common/NzbDrone.Common.csproj b/NzbDrone.Common/NzbDrone.Common.csproj
index 2369108023..2429b32a27 100644
--- a/NzbDrone.Common/NzbDrone.Common.csproj
+++ b/NzbDrone.Common/NzbDrone.Common.csproj
@@ -103,7 +103,7 @@
     <Compile Include="EnsureThat\ExpressionExtensions.cs" />
     <Compile Include="EnsureThat\Param.cs" />
     <Compile Include="EnsureThat\Resources\ExceptionMessages.Designer.cs" />
-    <Compile Include="EnsureThat\StringExtensions.cs" />
+    <Compile Include="StringExtensions.cs" />
     <Compile Include="EnsureThat\TypeParam.cs" />
     <Compile Include="HashUtil.cs" />
     <Compile Include="Instrumentation\ApplicationLogLayoutRenderer.cs" />
diff --git a/NzbDrone.Common/StringExtensions.cs b/NzbDrone.Common/StringExtensions.cs
new file mode 100644
index 0000000000..59dd084786
--- /dev/null
+++ b/NzbDrone.Common/StringExtensions.cs
@@ -0,0 +1,39 @@
+using System.Text.RegularExpressions;
+using System.Linq;
+
+namespace NzbDrone.Common
+{
+    public static class StringExtensions
+    {
+        public static string Inject(this string format, params object[] formattingArgs)
+        {
+            return string.Format(format, formattingArgs);
+        }
+
+        public static string Inject(this string format, params string[] formattingArgs)
+        {
+            return string.Format(format, formattingArgs.Cast<object>());
+        }
+
+
+        private static readonly Regex InvalidCharRegex = new Regex(@"[^a-z0-9\s-]", RegexOptions.Compiled | RegexOptions.IgnoreCase);
+        private static readonly Regex CollapseSpace = new Regex(@"\s+", RegexOptions.Compiled | RegexOptions.IgnoreCase);
+
+        public static string ToSlug(this string phrase)
+        {
+            phrase = phrase.RemoveAccent().ToLower();
+
+            phrase = InvalidCharRegex.Replace(phrase, string.Empty);
+            phrase = CollapseSpace.Replace(phrase, " ").Trim();
+            phrase = phrase.Replace(" ", "-");
+
+            return phrase;
+        }
+
+        public static string RemoveAccent(this string txt)
+        {
+            var bytes = System.Text.Encoding.GetEncoding("Cyrillic").GetBytes(txt);
+            return System.Text.Encoding.ASCII.GetString(bytes);
+        }
+    }
+}
\ No newline at end of file