diff --git a/src/libraries/Common/tests/TestUtilities/System/IO/FileCleanupTestBase.cs b/src/libraries/Common/tests/TestUtilities/System/IO/FileCleanupTestBase.cs
index 13425342d094c..c42baf2730445 100644
--- a/src/libraries/Common/tests/TestUtilities/System/IO/FileCleanupTestBase.cs
+++ b/src/libraries/Common/tests/TestUtilities/System/IO/FileCleanupTestBase.cs
@@ -141,7 +141,7 @@ protected static string GetNamedPipeServerStreamName()
                 return @"LOCAL\" + Guid.NewGuid().ToString("N");
             }
 
-            if (PlatformDetection.IsWindows)
+            if (PlatformDetection.IsWindows || !PlatformDetection.IsNotRunningOnMacOS)
             {
                 return Guid.NewGuid().ToString("N");
             }