diff --git a/EditorExtensions/Margin/LessMargin.cs b/EditorExtensions/Margin/LessMargin.cs
index fabcc1f08..57f85a7e2 100644
--- a/EditorExtensions/Margin/LessMargin.cs
+++ b/EditorExtensions/Margin/LessMargin.cs
@@ -26,7 +26,7 @@ protected override async void StartCompiler(string source)
 
             string lessFilePath = Document.FilePath;
 
-            string cssFilename = GetCompiledFileName(lessFilePath, ".css", CompileEnabled ? CompileToLocation : null);// Document.FilePath.Replace(".less", ".css");
+            string cssFilename = GetCompiledFileName(lessFilePath, ".css", CompileEnabled ? CompileToLocation : null);
 
             if (IsFirstRun && File.Exists(cssFilename))
             {
@@ -103,7 +103,7 @@ protected override string UpdateLessSourceMapUrls(string content, string sourceF
 
             WriteFile(updatedFileContent, sourceMapFilename, true, false);
 
-            return UpdateSourceLinkInCssComment(content, FileHelpers.RelativePath(sourceMapFilename, compiledFileName));
+            return UpdateSourceLinkInCssComment(content, FileHelpers.RelativePath(compiledFileName, sourceMapFilename));
         }
 
         private static string GetUpdatedSourceMapFileContent(string cssFileName, string sourceMapFilename)