--- a/Rules.mak
+++ b/Rules.mak
@@ -707,7 +707,6 @@ endif
 ifeq ($(UCLIBC_HAS_THREADS),y)
 ifeq ($(UCLIBC_HAS_THREADS_NATIVE),y)
 	PTNAME := nptl
-	CFLAGS += -DHAVE_FORCED_UNWIND
 else
 ifeq ($(LINUXTHREADS_OLD),y)
 	PTNAME := linuxthreads.old
