diff --git a/dbus-cxx/timeout.cpp b/dbus-cxx/timeout.cpp
index 16e9f7e..aa0b99f 100644
--- a/dbus-cxx/timeout.cpp
+++ b/dbus-cxx/timeout.cpp
@@ -132,7 +132,7 @@ namespace DBus
     return m_cobj;
   }
 
-  void Timeout::timer_callback_proxy( sigval_t sv ) {
+  void Timeout::timer_callback_proxy( union sigval sv ) {
     SIMPLELOGGER_DEBUG( "dbus.Timeout","Timeout::timer_callback_proxy" );
     Timeout* t;
     t = ( Timeout* ) sv.sival_ptr;
diff --git a/dbus-cxx/timeout.h b/dbus-cxx/timeout.h
index 1e469b5..5b69fbb 100644
--- a/dbus-cxx/timeout.h
+++ b/dbus-cxx/timeout.h
@@ -83,7 +83,7 @@ namespace DBus
 
       std::mutex m_arming_mutex;
 
-      static void timer_callback_proxy( sigval_t sv );
+      static void timer_callback_proxy( union sigval sv );
 
   };