diff --git a/boards/sim/sim/sim/scripts/Make.defs b/boards/sim/sim/sim/scripts/Make.defs
index c8897d9fb9e..10446490be8 100644
--- a/boards/sim/sim/sim/scripts/Make.defs
+++ b/boards/sim/sim/sim/scripts/Make.defs
@@ -38,6 +38,7 @@ include $(TOPDIR)/tools/Config.mk
 
 ARCHDEFINES += -U_AIX -U_WIN32 -U__APPLE__ -U__FreeBSD__
 ARCHDEFINES += -U__NetBSD__ -U__linux__ -U__sun__ -U__unix__
+ARCHDEFINES += -U__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__
 
 ifeq ($(CONFIG_DEBUG_SYMBOLS),y)
   ARCHOPTIMIZATION = -g