diff --git a/scripts/west_commands/build.py b/scripts/west_commands/build.py
index c4d0e09b851d..0c62213d679a 100644
--- a/scripts/west_commands/build.py
+++ b/scripts/west_commands/build.py
@@ -26,7 +26,7 @@
 west build [-h] [-b BOARD[@REV]]] [-d BUILD_DIR]
            [-t TARGET] [-p {auto, always, never}] [-c] [--cmake-only]
            [-n] [-o BUILD_OPT] [-f]
-           [--sysbuild | --no-sysbuild]
+           [--sysbuild | --no-sysbuild] [--domain DOMAIN]
            [source_dir] -- [cmake_opt [cmake_opt ...]]
 '''