diff --git a/common/mk-buildroot.sh b/common/mk-buildroot.sh
index 73fe1ef..490c304 100755
--- a/common/mk-buildroot.sh
+++ b/common/mk-buildroot.sh
@@ -1,5 +1,7 @@
 #!/bin/bash
 
+set -e
+
 COMMON_DIR=$(cd `dirname $0`; pwd)
 if [ -h $0 ]
 then
@@ -17,10 +19,10 @@ then
         exit 0
 fi
 source $TOP_DIR/buildroot/build/envsetup.sh $RK_CFG_BUILDROOT
-$TOP_DIR/buildroot/utils/brmake
-if [ $? -ne 0 ]; then
-    echo "log saved on $TOP_DIR/br.log"
-    tail -n 100 $TOP_DIR/br.log
-    exit 1
+if $TOP_DIR/buildroot/utils/brmake; then
+	echo "log saved on $TOP_DIR/br.log. pack buildroot image at: $TOP_DIR/buildroot/output/$RK_CFG_BUILDROOT/images/rootfs.$RK_ROOTFS_TYPE"
+else
+	echo "log saved on $TOP_DIR/br.log"
+	tail -n 100 $TOP_DIR/br.log
+	exit 1
 fi
-echo "log saved on $TOP_DIR/br.log. pack buildroot image at: $TOP_DIR/buildroot/output/$RK_CFG_BUILDROOT/images/rootfs.$RK_ROOTFS_TYPE"
diff --git a/common/mk-ramdisk.sh b/common/mk-ramdisk.sh
index a2e6198..ad28a22 100755
--- a/common/mk-ramdisk.sh
+++ b/common/mk-ramdisk.sh
@@ -114,8 +114,7 @@ fi
 
 # build ramdisk
 echo "====Start build $RAMDISK_CFG===="
-$TOP_DIR/buildroot/utils/brmake
-if [ $? -eq 0 ]; then
+if $TOP_DIR/buildroot/utils/brmake; then
     echo "log saved on $TOP_DIR/br.log"
     echo "====Build $RAMDISK_CFG ok!===="
 else