diff --git a/Tests/base/NSLock/RecursiveLock.m b/Tests/base/NSLock/RecursiveLock.m
index 17c3ff25d..964daa0c3 100644
--- a/Tests/base/NSLock/RecursiveLock.m
+++ b/Tests/base/NSLock/RecursiveLock.m
@@ -30,6 +30,10 @@ int main()
   PASS(ret, "NSRecursiveLock lockBeforeDate: with NSRecursiveLock returns YES");
 
 #if     defined(GNUSTEP_BASE_LIBRARY)
+  START_SET("mutex ownership extension")
+#if     defined(_WIN32)
+  SKIP("feature not available on windows")
+#endif
   NS_DURING
     {
       PASS([lock isLockedByCurrentThread] == NO,
@@ -46,6 +50,7 @@ int main()
       NSLog(@"-isLockedByCurrentThread not supported");
     }
   NS_ENDHANDLER
+  END_SET("mutex ownership extension")
 #endif
 
   [arp release]; arp = nil;