diff --git a/Python/thread_pthread.h b/Python/thread_pthread.h
index 8645c0f..d18d2de 100644
--- a/Python/thread_pthread.h
+++ b/Python/thread_pthread.h
@@ -133,7 +133,7 @@
 #ifdef THREAD_STACK_SIZE
 	pthread_attr_setstacksize(&attrs, THREAD_STACK_SIZE);
 #endif
-#ifdef PTHREAD_SYSTEM_SCHED_SUPPORTED
+#if defined(PTHREAD_SYSTEM_SCHED_SUPPORTED) && !defined(__FreeBSD__)
         pthread_attr_setscope(&attrs, PTHREAD_SCOPE_SYSTEM);
 #endif