diff --git a/src/Microsoft.DotNet.ProjectModel/OutputPathCalculator.cs b/src/Microsoft.DotNet.ProjectModel/OutputPathCalculator.cs
index b57ede72f..037ec87a5 100644
--- a/src/Microsoft.DotNet.ProjectModel/OutputPathCalculator.cs
+++ b/src/Microsoft.DotNet.ProjectModel/OutputPathCalculator.cs
@@ -133,7 +133,7 @@ namespace Microsoft.DotNet.ProjectModel
 
             // This is the check for mono, if we're not on windows and producing outputs for
             // the desktop framework then it's an exe
-            if (!RuntimeInformation.IsOSPlatform(OSPlatform.Windows) && _framework.IsDesktop())
+            if (_framework.IsDesktop())
             {
                 extension = FileNameSuffixes.DotNet.Exe;
             }
diff --git a/src/dotnet/commands/dotnet-run/Program.cs b/src/dotnet/commands/dotnet-run/Program.cs
index 390943002..fe5ab79c7 100644
--- a/src/dotnet/commands/dotnet-run/Program.cs
+++ b/src/dotnet/commands/dotnet-run/Program.cs
@@ -28,7 +28,6 @@ namespace Microsoft.DotNet.Tools.Run
 
                     syntax.DefineOption("f|framework", ref runCmd.Framework, "Compile a specific framework");
                     syntax.DefineOption("c|configuration", ref runCmd.Configuration, "Configuration under which to build");
-                    syntax.DefineOption("t|preserve-temporary", ref runCmd.PreserveTemporary, "Keep the output's temporary directory around");
                     syntax.DefineOption("p|project", ref runCmd.Project, "The path to the project to run (defaults to the current directory). Can be a path to a project.json or a project directory");
 
                     syntax.DefineOption("h|help", ref help, "Help for compile native.");
diff --git a/src/dotnet/commands/dotnet-run/RunCommand.cs b/src/dotnet/commands/dotnet-run/RunCommand.cs
index 23987bdba..d94745e47 100644
--- a/src/dotnet/commands/dotnet-run/RunCommand.cs
+++ b/src/dotnet/commands/dotnet-run/RunCommand.cs
@@ -16,7 +16,6 @@ namespace Microsoft.DotNet.Tools.Run
     {
         public string Framework = null;
         public string Configuration = null;
-        public bool PreserveTemporary = false;
         public string Project = null;
         public IReadOnlyList<string> Args = null;
 
@@ -85,23 +84,15 @@ namespace Microsoft.DotNet.Tools.Run
         {
             CalculateDefaultsForNonAssigned();
 
-            // Create a temporary directory under the project root
-            // REVIEW: MAX_PATH?
-            var tempDir = Path.Combine(_context.ProjectDirectory, "bin", ".dotnetrun", Guid.NewGuid().ToString("N"));
-
             // Compile to that directory
             var result = Build.BuildCommand.Run(new[]
-                {
-                    $"--output",
-                    $"{tempDir}",
-                    $"--temp-output",
-                    $"{tempDir}",
-                    $"--framework",
-                    $"{_context.TargetFramework}",
-                    $"--configuration",
-                    $"{Configuration}",
-                    $"{_context.ProjectFile.ProjectDirectory}"
-                });
+            {
+                $"--framework",
+                $"{_context.TargetFramework}",
+                $"--configuration",
+                $"{Configuration}",
+                $"{_context.ProjectFile.ProjectDirectory}"
+            });
 
             if (result != 0)
             {
@@ -109,7 +100,7 @@ namespace Microsoft.DotNet.Tools.Run
             }
 
             // Now launch the output and give it the results
-            var outputName = _context.GetOutputPathCalculator(tempDir).GetExecutablePath(Configuration);
+            var outputName = _context.GetOutputPathCalculator().GetExecutablePath(Configuration);
 
             if (!RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
             {
@@ -149,12 +140,6 @@ namespace Microsoft.DotNet.Tools.Run
                 .Execute()
                 .ExitCode;
 
-            // Clean up
-            if (!PreserveTemporary)
-            {
-                Directory.Delete(tempDir, recursive: true);
-            }
-
             return result;
         }