diff --git a/target/linux/atheros/config-2.6.33 b/target/linux/atheros/config-2.6.33
index 3d2ea92c93..e6c2653564 100644
--- a/target/linux/atheros/config-2.6.33
+++ b/target/linux/atheros/config-2.6.33
@@ -193,9 +193,7 @@ CONFIG_SYS_HAS_EARLY_PRINTK=y
 CONFIG_SYS_SUPPORTS_32BIT_KERNEL=y
 CONFIG_SYS_SUPPORTS_ARBIT_HZ=y
 CONFIG_SYS_SUPPORTS_BIG_ENDIAN=y
-# CONFIG_TINY_RCU is not set
 CONFIG_TRAD_SIGNALS=y
 # CONFIG_TREE_PREEMPT_RCU is not set
-CONFIG_TREE_RCU=y
 CONFIG_USB_SUPPORT=y
 CONFIG_ZONE_DMA_FLAG=0