diff --git a/Code-style.md b/Code-style.md
index 5d96294..1f3ee88 100644
--- a/Code-style.md
+++ b/Code-style.md
@@ -8,6 +8,8 @@ This wiki contains the developer documentation for AntennaPod. If you are a user
 
 For the Java code, AntennaPod uses a style similar to [Google's Java style](https://google.github.io/styleguide/javaguide.html). Checkstyle is run automatically when creating a pull request. The gradle `checkstyle` task only checks more relaxed rules ([config/checkstyle/checkstyle.xml](https://github.com/AntennaPod/AntennaPod/blob/develop/config/checkstyle/checkstyle.xml)) for the whole code base. On CI, the more strict rules ([config/checkstyle/checkstyle-new-code.xml](https://github.com/AntennaPod/AntennaPod/blob/develop/config/checkstyle/checkstyle-new-code.xml)) are used for new code. In Android Studio, you can set the checkstyle version to 8.18 and select the [config/checkstyle/checkstyle-new-code.xml](https://github.com/AntennaPod/AntennaPod/blob/develop/config/checkstyle/checkstyle-new-code.xml) config file. Please only reformat lines that you actually modify, not the whole file. This makes it easier to read the version history.
 
+For Android layout XML files, we use indention with 4 spaces. The id, layout_width and layout_height attributes come first. To easily format the files, you can use the same tool as our CI server: https://github.com/ByteHamster/android-xml-formatter
+
 ### Resource ID naming
 
 Please use lowerCamelCase for naming `@+id` resources. For some types listed in the table below, please add a suffix noting the type.