diff --git a/Containerfile b/Containerfile
index 48522b6..c46e481 100644
--- a/Containerfile
+++ b/Containerfile
@@ -33,8 +33,8 @@ RUN adduser -D -G imapfilter imapfilter
 RUN cat /etc/passwd
 # ensure a homedirectory for the user exists and has correct access rights
 RUN mkdir -p /home/imapfilter  
-RUN chown imapfilter.imapfilter /home/imapfilter
-
+RUN chown imapfilter /home/imapfilter
+RUN chgrp imapfilter /home/imapfilter
 # run everything as the imapfilter user
 USER imapfilter