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 56f14043b..747c739db 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
@@ -66,6 +66,7 @@ public class OmniSharpTests : SmokeTests
 
             Directory.CreateDirectory(OmniSharpDirectory);
             ExecuteHelper.ExecuteProcessValidateExitCode("tar", $"xzf {omniSharpTarballFile} -C {OmniSharpDirectory}", OutputHelper);
+			ExecuteHelper.ExecuteProcessValidateExitCode("chmod", $"+x {OmniSharpDirectory}/run", OutputHelper);
         }
     }
 }