diff --git a/engine/platform/platform.h b/engine/platform/platform.h
index 5ea88313..ab855aaa 100644
--- a/engine/platform/platform.h
+++ b/engine/platform/platform.h
@@ -178,7 +178,7 @@ static inline void Platform_Sleep( int msec )
 #endif
 }
 
-#if XASH_WIN32 || XASH_FREEBSD || XASH_NETBSD || XASH_OPENBSD || XASH_ANDROID || XASH_LINUX
+#if XASH_WIN32 || XASH_FREEBSD || XASH_NETBSD || XASH_OPENBSD || XASH_ANDROID || XASH_LINUX || XASH_APPLE
 void Sys_SetupCrashHandler( void );
 void Sys_RestoreCrashHandler( void );
 #else
diff --git a/engine/platform/posix/crash_glibc.c b/engine/platform/posix/crash_glibc.c
index 7e518b91..671c0c70 100644
--- a/engine/platform/posix/crash_glibc.c
+++ b/engine/platform/posix/crash_glibc.c
@@ -33,7 +33,7 @@ void Sys_Crash( int signal, siginfo_t *si, void *context )
 	len = Q_snprintf( message, sizeof( message ), "Ver: " XASH_ENGINE_NAME " " XASH_VERSION " (build %i-%s, %s-%s)\n",
 					  Q_buildnum(), g_buildcommit, Q_buildos(), Q_buildarch() );
 
-#if !XASH_FREEBSD && !XASH_NETBSD && !XASH_OPENBSD
+#if !XASH_FREEBSD && !XASH_NETBSD && !XASH_OPENBSD && !XASH_APPLE // they don't have si_ptr
 	len += Q_snprintf( message + len, sizeof( message ) - len, "Crash: signal %d errno %d with code %d at %p %p\n", signal, si->si_errno, si->si_code, si->si_addr, si->si_ptr );
 #else
 	len += Q_snprintf( message + len, sizeof( message ) - len, "Crash: signal %d errno %d with code %d at %p\n", signal, si->si_errno, si->si_code, si->si_addr );
diff --git a/engine/platform/posix/crash_posix.c b/engine/platform/posix/crash_posix.c
index 764440ab..46b35461 100644
--- a/engine/platform/posix/crash_posix.c
+++ b/engine/platform/posix/crash_posix.c
@@ -18,7 +18,8 @@ GNU General Public License for more details.
 // while this is mostly POSIX-compatible functions
 // the contents of ucontext_t is platform-dependent
 // before adding new OS here, check platform.h
-#if XASH_FREEBSD || XASH_NETBSD || XASH_OPENBSD || XASH_ANDROID || XASH_LINUX
+#define _XOPEN_SOURCE 1 // required for ucontext
+#if XASH_FREEBSD || XASH_NETBSD || XASH_OPENBSD || XASH_ANDROID || XASH_LINUX || XASH_APPLE
 #ifndef XASH_OPENBSD
 	#include <ucontext.h>
 #endif
@@ -118,7 +119,7 @@ void Sys_Crash( int signal, siginfo_t *si, void *context )
 	len = Q_snprintf( message, sizeof( message ), "Ver: " XASH_ENGINE_NAME " " XASH_VERSION " (build %i-%s, %s-%s)\n",
 					  Q_buildnum(), g_buildcommit, Q_buildos(), Q_buildarch() );
 
-#if !XASH_FREEBSD && !XASH_NETBSD && !XASH_OPENBSD
+#if !XASH_FREEBSD && !XASH_NETBSD && !XASH_OPENBSD && !XASH_APPLE
 	len += Q_snprintf( message + len, sizeof( message ) - len, "Crash: signal %d errno %d with code %d at %p %p\n", signal, si->si_errno, si->si_code, si->si_addr, si->si_ptr );
 #else
 	len += Q_snprintf( message + len, sizeof( message ) - len, "Crash: signal %d errno %d with code %d at %p\n", signal, si->si_errno, si->si_code, si->si_addr );