diff --git a/arch/arm/Makefile b/arch/arm/Makefile
index cd7d880..6defdfb 100644
--- a/arch/arm/Makefile
+++ b/arch/arm/Makefile
@@ -9,7 +9,7 @@
 
 # This selects which instruction set is used.
 arch-$(CONFIG_CPU_ARM720T)	=-march=armv4
-arch-$(CONFIG_CPU_ARM920T)	=-march=armv4
+arch-$(CONFIG_CPU_ARM920T)	=-march=armv4t
 arch-$(CONFIG_CPU_ARM926EJS)	=-march=armv5te
 arch-$(CONFIG_CPU_ARM946ES)	=-march=armv4
 arch-$(CONFIG_CPU_SA1100)	=-march=armv4