diff --git a/src/Build.UnitTests/BackEnd/BuildRequestConfiguration_Tests.cs b/src/Build.UnitTests/BackEnd/BuildRequestConfiguration_Tests.cs
index 12fbe5d15d9..4dea987a874 100644
--- a/src/Build.UnitTests/BackEnd/BuildRequestConfiguration_Tests.cs
+++ b/src/Build.UnitTests/BackEnd/BuildRequestConfiguration_Tests.cs
@@ -471,7 +471,8 @@ public void TestCache2()
 
             try
             {
-                string problematicTmpPath = @"C:\Users\}\blabla\temp";
+                // Check if } do not cause it to crash due to usage of String.Format or such on code path
+                string problematicTmpPath = Path.Combine(originalTmp,  "}", "blabla", "temp");
                 Environment.SetEnvironmentVariable("TMP", problematicTmpPath);
                 Environment.SetEnvironmentVariable("TEMP", problematicTmpPath);