diff --git a/web/content/docs/userguide/basics/cli-arguments.md b/web/content/docs/userguide/basics/cli-arguments.md
index d03e3bee88cbd70f63a11eff40c8b9d037674efc..8b72094d855fb2d9cf4d92a5c08a332132526115 100644
--- a/web/content/docs/userguide/basics/cli-arguments.md
+++ b/web/content/docs/userguide/basics/cli-arguments.md
@@ -30,6 +30,10 @@ $ ogs --help
    -o <PATH>,  --output-directory <PATH>
      the output directory to write to
 
+   --write-prj
+     Writes processed project file to output path /
+     [prj_base_name]_processed.prj.
+
    -p <>,  --xml-patch <>  (accepted multiple times)
      the xml patch file(s) which is (are) applied (in the given order) to
      the PROJECT_FILE