diff --git src/util/os_misc.c src/util/os_misc.c
index 4b7916634b3..c88898ee34b 100644
--- src/util/os_misc.c
+++ src/util/os_misc.c
@@ -66,6 +66,7 @@
 #  include <sys/sysctl.h>
 #  if DETECT_OS_APPLE
 #    include <mach/mach_host.h>
+#    include <mach/mach_init.h>
 #    include <mach/vm_param.h>
 #    include <mach/vm_statistics.h>
 #   endif