diff --git a/boards/x86_64/intel64/qemu-intel64/scripts/Make.defs b/boards/x86_64/intel64/qemu-intel64/scripts/Make.defs
index 28900248de..10cf08f490 100644
--- a/boards/x86_64/intel64/qemu-intel64/scripts/Make.defs
+++ b/boards/x86_64/intel64/qemu-intel64/scripts/Make.defs
@@ -57,7 +57,7 @@ CROSSDEV = i486-nuttx-elf-
 endif
 
 ifeq ($(CONFIG_HOST_MACOS),y)
-CROSSDEV = 86_64-elf-
+CROSSDEV = x86_64-elf-
 endif
 
 CC = $(CROSSDEV)gcc
@@ -73,6 +73,10 @@ CFLAGS = $(ARCHWARNINGS) $(ARCHOPTIMIZATION) $(ARCHCPUFLAGS) $(ARCHINCLUDES) $(A
 CPPFLAGS = $(ARCHINCLUDES) $(ARCHDEFINES) $(EXTRAFLAGS)
 AFLAGS = $(CFLAGS) -D__ASSEMBLY__
 
+ifeq ($(CONFIG_HOST_MACOS),y)
+AFLAGS += -Wa,--divide
+endif
+
 EXEEXT = .elf
 
 ifeq ($(CONFIG_DEBUG_SYMBOLS),y)