diff --git a/install-mpsd-software-environment.py b/install-mpsd-software-environment.py
index 39fdb225619e1c6e8654406e25902d7c5933ba2a..e9f21bb050ece8506adf45daea272f29bf224291 100755
--- a/install-mpsd-software-environment.py
+++ b/install-mpsd-software-environment.py
@@ -305,6 +305,7 @@ def main():
                     "--toolchain",  # allow singular as alternative 
                                     # (-> creates attribute `args.toolchains` if used)
                     type=str,
+                    dest="toolchains",
                     nargs="+",
                     default="NONE",
                     help="List of toolchains to install (use '--toolchains ALL' to install all toolchains). If nothing is specified, list of available toolchains for the release would be shown after creating the environment.",