diff --git a/src/Umbraco.Core/IO/IIOHelper.cs b/src/Umbraco.Core/IO/IIOHelper.cs
index ee36b2a96b..42ca804f44 100644
--- a/src/Umbraco.Core/IO/IIOHelper.cs
+++ b/src/Umbraco.Core/IO/IIOHelper.cs
@@ -4,11 +4,8 @@ namespace Umbraco.Core.IO
 {
     public interface IIOHelper
     {
-        // TODO: There is no need for this, we should just use Path.DirectorySeparatorChar which is cross platform, no need for an abstraction?
-        char DirSepChar { get; }
-
         string FindFile(string virtualPath);
-        
+
         // TODO: This is the same as IHostingEnvironment.ToAbsolute
         string ResolveUrl(string virtualPath);
 
diff --git a/src/Umbraco.Core/IO/IOHelper.cs b/src/Umbraco.Core/IO/IOHelper.cs
index 91b1d70a11..a71a307e01 100644
--- a/src/Umbraco.Core/IO/IOHelper.cs
+++ b/src/Umbraco.Core/IO/IOHelper.cs
@@ -22,8 +22,6 @@ namespace Umbraco.Core.IO
         // static compiled regex for faster performance
         //private static readonly Regex ResolveUrlPattern = new Regex("(=[\"\']?)(\\W?\\~(?:.(?![\"\']?\\s+(?:\\S+)=|[>\"\']))+.)[\"\']?", RegexOptions.Compiled | RegexOptions.IgnoreCase | RegexOptions.IgnorePatternWhitespace);
 
-        public char DirSepChar => Path.DirectorySeparatorChar;
-
         //helper to try and match the old path to a new virtual one
         public string FindFile(string virtualPath)
         {
@@ -86,9 +84,10 @@ namespace Umbraco.Core.IO
                 if (result != null) return result;
             }
 
+            var dirSepChar = Path.DirectorySeparatorChar;
             var root = Assembly.GetExecutingAssembly().GetRootDirectorySafe();
-            var newPath = path.TrimStart('~', '/').Replace('/', DirSepChar);
-            var retval = root + DirSepChar.ToString(CultureInfo.InvariantCulture) + newPath;
+            var newPath = path.TrimStart('~', '/').Replace('/', dirSepChar);
+            var retval = root + dirSepChar.ToString(CultureInfo.InvariantCulture) + newPath;
 
             return retval;
         }
diff --git a/src/Umbraco.Tests/Web/Controllers/AuthenticationControllerTests.cs b/src/Umbraco.Tests/Web/Controllers/AuthenticationControllerTests.cs
index c09842f730..a162b0cd48 100644
--- a/src/Umbraco.Tests/Web/Controllers/AuthenticationControllerTests.cs
+++ b/src/Umbraco.Tests/Web/Controllers/AuthenticationControllerTests.cs
@@ -75,10 +75,10 @@ namespace Umbraco.Tests.Web.Controllers
                 }
                 else
                 {
-                    var baseDir = IOHelper.MapPath("").TrimEnd(IOHelper.DirSepChar);
+                    var baseDir = IOHelper.MapPath("").TrimEnd(Path.DirectorySeparatorChar);
                     HttpContext.Current = new HttpContext(new SimpleWorkerRequest("/", baseDir, "", "", new StringWriter()));
                 }
-                
+
                 var usersController = new AuthenticationController(
                     new TestUserPasswordConfig(),
                     Factory.GetInstance<IGlobalSettings>(),
diff --git a/src/Umbraco.Web/Editors/BackOfficeAssetsController.cs b/src/Umbraco.Web/Editors/BackOfficeAssetsController.cs
index 7b4f036313..d7bfc5c1fa 100644
--- a/src/Umbraco.Web/Editors/BackOfficeAssetsController.cs
+++ b/src/Umbraco.Web/Editors/BackOfficeAssetsController.cs
@@ -1,5 +1,6 @@
 using System;
 using System.Collections.Generic;
+using System.IO;
 using System.Linq;
 using System.Web.Http;
 using Umbraco.Core.Composing;
@@ -17,7 +18,7 @@ namespace Umbraco.Web.Editors
 
         public BackOfficeAssetsController(IIOHelper ioHelper, ILogger logger, IGlobalSettings globalSettings)
         {
-            _jsLibFileSystem = new PhysicalFileSystem(ioHelper, logger, globalSettings.UmbracoPath + ioHelper.DirSepChar + "lib");
+            _jsLibFileSystem = new PhysicalFileSystem(ioHelper, logger, globalSettings.UmbracoPath + Path.DirectorySeparatorChar + "lib");
         }
 
         [HttpGet]
diff --git a/src/Umbraco.Web/Editors/TinyMceController.cs b/src/Umbraco.Web/Editors/TinyMceController.cs
index ff7fdd980e..fd69a94096 100644
--- a/src/Umbraco.Web/Editors/TinyMceController.cs
+++ b/src/Umbraco.Web/Editors/TinyMceController.cs
@@ -105,7 +105,7 @@ namespace Umbraco.Web.Editors
 
             //var mediaItemName = fileName.ToFriendlyName();
             var currentFile = file.LocalFileName;
-            var newFilePath = imageTempPath +  _ioHelper.DirSepChar + safeFileName;
+            var newFilePath = imageTempPath +  Path.DirectorySeparatorChar + safeFileName;
             var relativeNewFilePath = _ioHelper.GetRelativePath(newFilePath);
 
             try