@@ -126,16 +126,16 @@
 	OFArray OF_GENERIC(OFString *) *_arguments;
 	OFMutableDictionary OF_GENERIC(OFString *, OFString *) *_environment;
 	int *_argc;
 	char ***_argv;
 @public
-	id <OFApplicationDelegate> _delegate;
-	void (*_SIGINTHandler)(id, SEL);
+	id <OFApplicationDelegate> _Nullable _delegate;
+	void (*_Nullable _SIGINTHandler)(id, SEL);
 #ifndef OF_WINDOWS
-	void (*_SIGHUPHandler)(id, SEL);
-	void (*_SIGUSR1Handler)(id, SEL);
-	void (*_SIGUSR2Handler)(id, SEL);
+	void (*_Nullable _SIGHUPHandler)(id, SEL);
+	void (*_Nullable _SIGUSR1Handler)(id, SEL);
+	void (*_Nullable _SIGUSR2Handler)(id, SEL);
 #endif
 }
 
 /*!
  * The name of the program (argv[0]).