diff --git a/src/SourceBuild/tarball/content/test/Microsoft.DotNet.SourceBuild.SmokeTests/OmniSharpTests.cs b/src/SourceBuild/tarball/content/test/Microsoft.DotNet.SourceBuild.SmokeTests/OmniSharpTests.cs
index f8d6ce417..91083a2ed 100644
--- a/src/SourceBuild/tarball/content/test/Microsoft.DotNet.SourceBuild.SmokeTests/OmniSharpTests.cs
+++ b/src/SourceBuild/tarball/content/test/Microsoft.DotNet.SourceBuild.SmokeTests/OmniSharpTests.cs
@@ -67,7 +67,8 @@ public class OmniSharpTests : SmokeTests
 
             Directory.CreateDirectory(OmniSharpDirectory);
             ExecuteHelper.ExecuteProcessValidateExitCode("tar", $"xzf {omniSharpTarballFile} -C {OmniSharpDirectory}", OutputHelper);
-
+            ExecuteHelper.ExecuteProcessValidateExitCode("chmod", $"+x {OmniSharpDirectory}/run", OutputHelper);
+            
 			// Ensure the run script is executable (see https://github.com/OmniSharp/omnisharp-roslyn/issues/2547)
             File.SetUnixFileMode($"{OmniSharpDirectory}/run", UnixFileMode.UserRead | UnixFileMode.UserExecute);
         }