diff --git a/arch/arm/configs/rk29_ddr3sdk_defconfig b/arch/arm/configs/rk29_ddr3sdk_defconfig
index 52d932377e95..f74cdb131fe4 100755
--- a/arch/arm/configs/rk29_ddr3sdk_defconfig
+++ b/arch/arm/configs/rk29_ddr3sdk_defconfig
@@ -51,7 +51,7 @@ CONFIG_RCU_FANOUT=32
 # CONFIG_RCU_FANOUT_EXACT is not set
 # CONFIG_TREE_RCU_TRACE is not set
 # CONFIG_IKCONFIG is not set
-CONFIG_LOG_BUF_SHIFT=17
+CONFIG_LOG_BUF_SHIFT=19
 CONFIG_GROUP_SCHED=y
 CONFIG_FAIR_GROUP_SCHED=y
 CONFIG_RT_GROUP_SCHED=y