diff --git a/target/linux/gemini/Makefile b/target/linux/gemini/Makefile
index 8073b18a8..ef0cf4b36 100644
--- a/target/linux/gemini/Makefile
+++ b/target/linux/gemini/Makefile
@@ -10,7 +10,7 @@ ARCH:=arm
 BOARD:=gemini
 BOARDNAME:=Cortina Systems CS351x
 FEATURES:=squashfs
-CFLAGS:=-Os -pipe -march=armv4 -mtune=arm9tdmi -funit-at-a-time
+CFLAGS:=-Os -pipe -march=armv4 -mtune=fa526 -funit-at-a-time
 MAINTAINER:=Imre Kaloz <kaloz@openwrt.org>
 
 LINUX_VERSION:=2.6.37.1