diff --git a/arch/arm/mach-rk30/Makefile b/arch/arm/mach-rk30/Makefile
index 9835756a1a1a..10364157106e 100755
--- a/arch/arm/mach-rk30/Makefile
+++ b/arch/arm/mach-rk30/Makefile
@@ -7,7 +7,6 @@ endif
 obj-y += common.o
 CFLAGS_common.o += -DTEXT_OFFSET=$(TEXT_OFFSET)
 obj-y += ddr.o
-CFLAGS_ddr.o += -mthumb
 obj-y += devices.o
 obj-y += io.o
 obj-$(CONFIG_ARCH_RK30XX) += iomux.o
@@ -19,12 +18,10 @@ obj-$(CONFIG_SMP) += platsmp.o headsmp.o
 obj-$(CONFIG_HOTPLUG_CPU) += hotplug.o
 obj-$(CONFIG_LOCAL_TIMERS) += localtimer.o
 obj-$(CONFIG_PM) += pm.o
-CFLAGS_pm.o += -mthumb
 obj-$(CONFIG_CPU_IDLE) += cpuidle.o
 obj-$(CONFIG_CPU_FREQ) += cpufreq.o
 obj-$(CONFIG_DVFS) += dvfs.o
 obj-$(CONFIG_RK30_I2C_INSRAM) += i2c_sram.o
-CFLAGS_i2c_sram.o += -mthumb
 
 obj-$(CONFIG_MACH_RK3066_SDK) += board-rk30-sdk.o
 obj-$(CONFIG_MACH_RK30_SDK) += board-rk30-sdk.o