diff --git a/Dockerfile b/Dockerfile
index aefa72a..87ed5b8 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -14,7 +14,7 @@ ENV LANG='en_US.UTF-8' \
 
 RUN zypper -n in tar wget gzip
 RUN groupadd -g $PM_GID $PM_GROUP
-RUN useradd -D -u $PM_UID -g $PM_GROUP -M $PM_USER
+RUN useradd -u $PM_UID -g $PM_GROUP -M $PM_USER
 RUN mkdir /pmmp
 RUN chown $PM_USER:$PM_GROUP /pmmp
 RUN cd /pmmp