diff --git a/lib/libthr/thread/thr_private.h b/lib/libthr/thread/thr_private.h
index e5a82b99e49..e8cf40864ab 100644
--- a/lib/libthr/thread/thr_private.h
+++ b/lib/libthr/thread/thr_private.h
@@ -452,6 +452,7 @@ struct pthread {
 #ifdef _PTHREAD_FORCED_UNWIND
 	struct _Unwind_Exception	ex;
 	void			*unwind_stackend;
+	int			unwind_disabled;
 #endif
 
 	/*