diff --git a/sal/osl/unx/signal.cxx b/sal/osl/unx/signal.cxx
index 79721def6c5e..0694fc3c7b26 100644
--- a/sal/osl/unx/signal.cxx
+++ b/sal/osl/unx/signal.cxx
@@ -197,7 +197,7 @@ bool onInitSignal()
 
     struct sigaction act;
     act.sa_sigaction = signalHandlerFunction;
-    act.sa_flags = SA_RESTART | SA_SIGINFO;
+    act.sa_flags = SA_RESTART | SA_SIGINFO | SA_ONSTACK;
 
     sigfillset(&(act.sa_mask));