diff --git a/packaging/debian-multiarch/sogo.preinst b/packaging/debian-multiarch/sogo.preinst
index 9b9801035..3a63d612d 100644
--- a/packaging/debian-multiarch/sogo.preinst
+++ b/packaging/debian-multiarch/sogo.preinst
@@ -15,7 +15,7 @@ if [ "$1" == "install" ] || [ "$1" == "upgrade" ]; then
 
   getent group sogo >& /dev/null || groupadd -f -r sogo
   if ! id sogo 1> /dev/null 2>&1; then
-    useradd -d /var/lib/sogo -g sogo -c "SOGo daemon" -s /usr/sbin/nologin -r sogo
+    useradd -d /var/lib/sogo -g sogo -c "SOGo daemon" -s /usr/sbin/nologin -r -g sogo sogo
   fi
 
   # create mandatory dirs and enforce owner+mode