Index: configure.ac
==================================================================
--- configure.ac
+++ configure.ac
@@ -654,12 +654,10 @@
 		AC_SUBST(ENCODINGS_A, "encodings.a")
 		AC_SUBST(ENCODINGS_ENCODINGS_A, "encodings/encodings.a")
 	])
 ])
 
-AC_CHECK_FUNCS(sigaction)
-
 AC_CHECK_FUNCS(arc4random random, break)
 
 AC_CHECK_LIB(dl, dlopen, LIBS="$LIBS -ldl")
 AC_CHECK_HEADERS_ONCE(dlfcn.h)
 case "$host_os" in

Index: src/OFApplication.m
==================================================================
--- src/OFApplication.m
+++ src/OFApplication.m
@@ -69,16 +69,10 @@
 # define asm __asm__
 # include <nds.h>
 # undef asm
 #endif
 
-#ifdef HAVE_SIGACTION
-# ifndef SA_RESTART
-#  define SA_RESTART 0
-# endif
-#endif
-
 @interface OFApplication ()
 - (instancetype)of_init OF_METHOD_FAMILY(init);
 - (void)of_setArgumentCount: (int *)argc
 	  andArgumentValues: (char **[])argv;
 #ifdef OF_WINDOWS
@@ -507,37 +501,19 @@
 	return _delegate;
 }
 
 - (void)setDelegate: (id <OFApplicationDelegate>)delegate
 {
-#ifdef HAVE_SIGACTION
-	struct sigaction sa = { .sa_flags = SA_RESTART };
-	sigemptyset(&sa.sa_mask);
-
-# define REGISTER_SIGNAL(sig)						\
-	if ([delegate respondsToSelector:				\
-	    @selector(applicationDidReceive##sig)]) {			\
-		_##sig##Handler = (void (*)(id, SEL))[(id)delegate	\
-		    methodForSelector:					\
-		    @selector(applicationDidReceive##sig)];		\
-									\
-		sa.sa_handler = handle##sig;				\
-	} else								\
-		sa.sa_handler = SIG_DFL;				\
-									\
-	OF_ENSURE(sigaction(sig, &sa, NULL) == 0);
-#else
-# define REGISTER_SIGNAL(sig)						\
+#define REGISTER_SIGNAL(sig)						\
 	if ([delegate respondsToSelector:				\
 	    @selector(applicationDidReceive##sig)]) {			\
 		_##sig##Handler = (void (*)(id, SEL))[(id)delegate	\
 		    methodForSelector:					\
 		    @selector(applicationDidReceive##sig)];		\
 		signal(sig, handle##sig);				\
 	} else								\
 		signal(sig, (void (*)(int))SIG_DFL);
-#endif
 
 	_delegate = delegate;
 
 	REGISTER_SIGNAL(SIGINT)
 #ifdef SIGHUP