diff --git a/target/linux/octeon/Makefile b/target/linux/octeon/Makefile
index 8e9ca60167..f4fd9da79b 100644
--- a/target/linux/octeon/Makefile
+++ b/target/linux/octeon/Makefile
@@ -6,12 +6,12 @@
 #
 include $(TOPDIR)/rules.mk
 
-ARCH:=mips
+ARCH:=mips64
 BOARD:=octeon
 BOARDNAME:=Cavium Networks Octeon
 FEATURES:=squashfs jffs2 pci usb
 CPU_TYPE:=octeon
-CPU_CFLAGS_octeon:=-march=octeon
+CPU_CFLAGS_octeon:=-march=octeon -mabi=64
 MAINTAINER:=John Crispin <blogic@openwrt.org>
 
 LINUX_VERSION:=3.10.36