diff --git a/scripts/gen_image.sh b/scripts/gen_image.sh
index fc9a195..000c834 100755
--- a/scripts/gen_image.sh
+++ b/scripts/gen_image.sh
@@ -49,7 +49,7 @@ parseargs()
         elif [ "x$1" == "x" ]; then
             shift
         elif [ "x$1" == "x-n" -o "x$1" == "x--name" ]; then
-            name=`echo $2`
+            name=`echo $2-$(date +%Y%m%d%H%M)`
             if [ "x${name:0-4}" == "x.img" ]; then
                 name=${name::-4}
             fi