diff --git a/src/Uno.UI.TestComparer/Program.cs b/src/Uno.UI.TestComparer/Program.cs
index 4303e72ac6..4b95708be0 100644
--- a/src/Uno.UI.TestComparer/Program.cs
+++ b/src/Uno.UI.TestComparer/Program.cs
@@ -166,7 +166,7 @@ namespace Umbrella.UI.TestComparer
 				return;
 			}
 
-			if (string.IsNullOrEmpty(githubPAT.Trim()))
+			if (string.IsNullOrEmpty(githubPAT.Trim()) || githubPAT.StartsWith("$("))
 			{
 				Console.WriteLine($"No GitHub PAT, no PR comment will be posted.");
 				return;