diff --git a/include/libunwind-ia64.h b/include/libunwind-ia64.h
index adec0bf0..5de84f35 100644
--- a/include/libunwind-ia64.h
+++ b/include/libunwind-ia64.h
@@ -125,7 +125,7 @@ typedef ucontext_t unw_tdep_context_t;
    using the "getcontext" name just because it's using libunwind.  We
    can't just use __getcontext() either, because that isn't exported
    by glibc...  */
-#define unw_tdep_getcontext(uc)		getcontext(uc)
+#define unw_tdep_getcontext(uc)		(getcontext (uc), 0)
 
 #define unw_tdep_is_fpreg(r)		((unsigned) ((r) - UNW_IA64_FR) < 128)