diff --git a/src/NzbDrone.Common/Disk/DiskProviderBase.cs b/src/NzbDrone.Common/Disk/DiskProviderBase.cs
index 59a844526..c3942d268 100644
--- a/src/NzbDrone.Common/Disk/DiskProviderBase.cs
+++ b/src/NzbDrone.Common/Disk/DiskProviderBase.cs
@@ -37,6 +37,7 @@ namespace NzbDrone.Common.Disk
         public abstract long? GetAvailableSpace(string path);
         public abstract void InheritFolderPermissions(string filename);
         public abstract void SetEveryonePermissions(string filename);
+        public abstract void SetFilePermissions(string path, string mask, string group);
         public abstract void SetPermissions(string path, string mask, string group);
         public abstract void CopyPermissions(string sourcePath, string targetPath);
         public abstract long? GetTotalSize(string path);
diff --git a/src/NzbDrone.Common/Disk/IDiskProvider.cs b/src/NzbDrone.Common/Disk/IDiskProvider.cs
index 6eb8a9aa9..d418abbcc 100644
--- a/src/NzbDrone.Common/Disk/IDiskProvider.cs
+++ b/src/NzbDrone.Common/Disk/IDiskProvider.cs
@@ -12,6 +12,7 @@ namespace NzbDrone.Common.Disk
         long? GetAvailableSpace(string path);
         void InheritFolderPermissions(string filename);
         void SetEveryonePermissions(string filename);
+        void SetFilePermissions(string path, string mask, string group);
         void SetPermissions(string path, string mask, string group);
         void CopyPermissions(string sourcePath, string targetPath);
         long? GetTotalSize(string path);
diff --git a/src/NzbDrone.Core/Update/InstallUpdateService.cs b/src/NzbDrone.Core/Update/InstallUpdateService.cs
index af405dd3f..74e53142b 100644
--- a/src/NzbDrone.Core/Update/InstallUpdateService.cs
+++ b/src/NzbDrone.Core/Update/InstallUpdateService.cs
@@ -139,7 +139,7 @@ namespace NzbDrone.Core.Update
             // Set executable flag on update app
             if (OsInfo.IsOsx || (OsInfo.IsLinux && PlatformInfo.IsNetCore))
             {
-                _diskProvider.SetPermissions(_appFolderInfo.GetUpdateClientExePath(updatePackage.Runtime), "0755", null);
+                _diskProvider.SetFilePermissions(_appFolderInfo.GetUpdateClientExePath(updatePackage.Runtime), "755", null);
             }
 
             _logger.Info("Starting update client {0}", _appFolderInfo.GetUpdateClientExePath(updatePackage.Runtime));
diff --git a/src/NzbDrone.Mono.Test/DiskProviderTests/DiskProviderFixture.cs b/src/NzbDrone.Mono.Test/DiskProviderTests/DiskProviderFixture.cs
index b617eef16..0d076d1e1 100644
--- a/src/NzbDrone.Mono.Test/DiskProviderTests/DiskProviderFixture.cs
+++ b/src/NzbDrone.Mono.Test/DiskProviderTests/DiskProviderFixture.cs
@@ -38,6 +38,7 @@ namespace NzbDrone.Mono.Test.DiskProviderTests
                 {
                     Syscall.chmod(_tempPath, FilePermissions.S_IRUSR | FilePermissions.S_IWUSR);
                 }
+
                 _tempPath = null;
             }
         }
@@ -55,7 +56,6 @@ namespace NzbDrone.Mono.Test.DiskProviderTests
         protected void SetWritePermissionsInternal(string path, bool writable, bool setgid)
         {
             // Remove Write permissions, we're still owner so we can clean it up, but we'll have to do that explicitly.
-
             Stat stat;
             Syscall.stat(path, out stat);
             FilePermissions mode = stat.st_mode;
@@ -69,7 +69,6 @@ namespace NzbDrone.Mono.Test.DiskProviderTests
                 mode &= ~(FilePermissions.S_IWUSR | FilePermissions.S_IWGRP | FilePermissions.S_IWOTH);
             }
 
-
             if (setgid)
             {
                 mode |= FilePermissions.S_ISGID;
diff --git a/src/NzbDrone.Mono/Disk/DiskProvider.cs b/src/NzbDrone.Mono/Disk/DiskProvider.cs
index b91f95237..91e7cf999 100644
--- a/src/NzbDrone.Mono/Disk/DiskProvider.cs
+++ b/src/NzbDrone.Mono/Disk/DiskProvider.cs
@@ -8,6 +8,7 @@ using Mono.Unix.Native;
 using NLog;
 using NzbDrone.Common.Disk;
 using NzbDrone.Common.EnsureThat;
+using NzbDrone.Common.EnvironmentInfo;
 using NzbDrone.Common.Extensions;
 using NzbDrone.Common.Instrumentation;
 
@@ -24,6 +25,7 @@ namespace NzbDrone.Mono.Disk
         private readonly IProcMountProvider _procMountProvider;
         private readonly ISymbolicLinkResolver _symLinkResolver;
         private readonly IRefLinkCreator _createRefLink;
+        private readonly Logger _logger;
 
         public DiskProvider(IProcMountProvider procMountProvider,
                             ISymbolicLinkResolver symLinkResolver,
@@ -78,10 +80,15 @@ namespace NzbDrone.Mono.Disk
         {
         }
 
-        public override void SetPermissions(string path, string mask, string group)
+        public override void SetFilePermissions(string path, string mask, string group)
         {
-            _logger.Debug("Setting permissions: {0} on {1}", mask, path);
+            var permissions = NativeConvert.FromOctalPermissionString(mask);
 
+            SetPermissions(path, mask, group, permissions);
+        }
+
+        public override void SetPermissions(string path, string mask, string group)
+        {
             var permissions = NativeConvert.FromOctalPermissionString(mask);
 
             if (_fileSystem.File.Exists(path))
@@ -89,6 +96,13 @@ namespace NzbDrone.Mono.Disk
                 permissions = GetFilePermissions(permissions);
             }
 
+            SetPermissions(path, mask, group, permissions);
+        }
+
+        protected void SetPermissions(string path, string mask, string group, FilePermissions permissions)
+        {
+            _logger.Debug("Setting permissions: {0} on {1}", mask, path);
+
             // Preserve non-access permissions
             if (Syscall.stat(path, out var curStat) < 0)
             {
diff --git a/src/NzbDrone.Update/UpdateEngine/InstallUpdateService.cs b/src/NzbDrone.Update/UpdateEngine/InstallUpdateService.cs
index 45ae551ab..c6c70cf01 100644
--- a/src/NzbDrone.Update/UpdateEngine/InstallUpdateService.cs
+++ b/src/NzbDrone.Update/UpdateEngine/InstallUpdateService.cs
@@ -128,7 +128,7 @@ namespace NzbDrone.Update.UpdateEngine
                     // Set executable flag on Readarr app
                     if (OsInfo.IsOsx || (OsInfo.IsLinux && PlatformInfo.IsNetCore))
                     {
-                        _diskProvider.SetPermissions(Path.Combine(installationFolder, "Readarr"), "0755", null);
+                        _diskProvider.SetFilePermissions(Path.Combine(installationFolder, "Readarr"), "755", null);
                     }
                 }
                 catch (Exception e)
diff --git a/src/NzbDrone.Windows/Disk/DiskProvider.cs b/src/NzbDrone.Windows/Disk/DiskProvider.cs
index d1fbfa100..f480eaf36 100644
--- a/src/NzbDrone.Windows/Disk/DiskProvider.cs
+++ b/src/NzbDrone.Windows/Disk/DiskProvider.cs
@@ -1,4 +1,4 @@
-using System;
+using System;
 using System.IO;
 using System.IO.Abstractions;
 using System.Linq;
@@ -102,6 +102,10 @@ namespace NzbDrone.Windows.Disk
             }
         }
 
+        public override void SetFilePermissions(string path, string mask, string group)
+        {
+        }
+
         public override void SetPermissions(string path, string mask, string group)
         {
         }