diff --git a/README-CN.md b/README-CN.md
index 25d12aa..a2a04ff 100644
--- a/README-CN.md
+++ b/README-CN.md
@@ -68,7 +68,7 @@ docker pull marcelstoer/nodemcu-build
 
 ## 贡献
 感谢 [Paul Sokolovsky](http://pfalcon-oe.blogspot.com/) 创建并维护 [esp-open-sdk](https://github.com/pfalcon/esp-open-sdk)。  
-把更多的感谢给  [Paul Sokolovsky](http://pfalcon-oe.blogspot.com/) ，他实现了 LFS 支持，并删除了此镜像的设计不良的 `INTEGER_ONLY` / `FLOAT_ONLY` 参数。
+把更多的感谢给  [Gregor Hartmann](https://github.com/HHHartmann) ，他实现了 LFS 支持，并删除了此镜像的设计不良的 `INTEGER_ONLY` / `FLOAT_ONLY` 参数。
 
 ## 作者
 [http://frightanic.com](http://frightanic.com)
diff --git a/README.md b/README.md
index 791ad88..9fc4b43 100644
--- a/README.md
+++ b/README.md
@@ -74,6 +74,9 @@ This will compile and store all Lua files in the given folder including subfolde
 #### Output
 Depending on what type(s) of firmware you built this will create one or two LFS images in the root of your lua folder.
 
+#### Options
+Same as for ``build`` command.
+
 ### Note for Windows users
 
 (Docker on) Windows handles paths slightly differently. You need to specify the full path to the NodeMCU firmware directory in the command and you need to add an extra forward slash (`/`) to the Windows path. The command thus becomes (`c` equals C drive i.e. `c:`):
diff --git a/lfs-image b/lfs-image
index 0dce866..9ccd47f 100755
--- a/lfs-image
+++ b/lfs-image
@@ -1,7 +1,6 @@
 #!/usr/bin/env bash
 
 set -e
-set +e
 
 # Config options you may pass via Docker like so 'docker run -e "<option>=<value>"':
 # - IMAGE_NAME=<name>, define a static name for your .img files
@@ -14,23 +13,25 @@ if [ ! -x luac.cross -a !  -x luac.cross.int ]; then
 fi
 
 export BUILD_DATE
-BUILD_DATE="$(date "+%Y-%m-%d %H:%M")"
+BUILD_DATE="$(date "+%Y%m%d-%H%M")"
 LUA_FILES=$(find ../lua -iname "*.lua")
 echo Adding files: ${LUA_FILES}
 
 if [ -z "$IMAGE_NAME" ]; then
-  IMAGE_NAME=LFS_"${BUILD_DATE}"
+  IMAGE_NAME="${BUILD_DATE}"
 fi
 
 # make a float LFS image if available
 if [ -x luac.cross ]; then
-  echo creating "${IMAGE_NAME}".img
-  find ../lua -iname "*.lua" -exec ./luac.cross -f -o ../lua/"${IMAGE_NAME}".img {} +
+  FILENAME=LFS_float_"${IMAGE_NAME}".img
+  echo creating ${FILENAME}
+  find ../lua -iname "*.lua" -exec ./luac.cross -f -o ../lua/"${FILENAME}" {} +
 fi
 
 # make an int LFS image if available
 if [ -x luac.cross.int ]; then
-  echo creating "${IMAGE_NAME}"_int.img
-  find ../lua -iname "*.lua" -exec ./luac.cross.int -f -o ../lua/"${IMAGE_NAME}"_int.img {} +
+  FILENAME=LFS_integer_"${IMAGE_NAME}".img
+  echo creating ${FILENAME}
+  find ../lua -iname "*.lua" -exec ./luac.cross.int -f -o ../lua/"${FILENAME}" {} +
 fi