@@ -96,13 +96,17 @@
 	{							\
 		app->_##sig##Handler(app->_delegate,		\
 		    @selector(applicationDidReceive##sig));	\
 	}
 SIGNAL_HANDLER(SIGINT)
-#ifndef OF_WINDOWS
+#ifdef SIGHUP
 SIGNAL_HANDLER(SIGHUP)
+#endif
+#ifdef SIGUSR1
 SIGNAL_HANDLER(SIGUSR1)
+#endif
+#ifdef SIGUSR2
 SIGNAL_HANDLER(SIGUSR2)
 #endif
 #undef SIGNAL_HANDLER
 
 int
@@ -460,13 +464,17 @@
 #endif
 
 	_delegate = delegate;
 
 	REGISTER_SIGNAL(SIGINT)
-#ifndef OF_WINDOWS
+#ifdef SIGHUP
 	REGISTER_SIGNAL(SIGHUP)
+#endif
+#ifdef SIGUSR1
 	REGISTER_SIGNAL(SIGUSR1)
+#endif
+#ifdef SIGUSR2
 	REGISTER_SIGNAL(SIGUSR2)
 #endif
 
 #undef REGISTER_SIGNAL
 }