diff --git a/gum/backend-posix/gumexceptor-posix.c b/gum/backend-posix/gumexceptor-posix.c
index c330f8ab3..31b7934df 100644
--- a/gum/backend-posix/gumexceptor-posix.c
+++ b/gum/backend-posix/gumexceptor-posix.c
@@ -253,6 +253,9 @@ gum_exceptor_backend_attach (GumExceptorBackend * self)
   action.sa_sigaction = gum_exceptor_backend_on_signal;
   sigemptyset (&action.sa_mask);
   action.sa_flags = SA_SIGINFO | SA_NODEFER;
+#ifdef SA_ONSTACK
+  action.sa_flags |= SA_ONSTACK;
+#endif
   for (i = 0; i != G_N_ELEMENTS (handled_signals); i++)
   {
     gint sig = handled_signals[i];