diff --git a/TestFoundation/TestBundle.swift b/TestFoundation/TestBundle.swift
index 3dfbee5319..2fd64eb0d5 100644
--- a/TestFoundation/TestBundle.swift
+++ b/TestFoundation/TestBundle.swift
@@ -98,7 +98,11 @@ class BundlePlayground {
             case .executable:
                 return ""
             case .library:
+#if os(Windows)
+                return ""
+#else
                 return "lib"
+#endif
             }
         }
     }