diff --git a/debian/bluecherry.preinst.template b/debian/bluecherry.preinst.template
index 0da44acd..411c01d5 100644
--- a/debian/bluecherry.preinst.template
+++ b/debian/bluecherry.preinst.template
@@ -56,6 +56,8 @@ case "$1" in
 				-g bluecherry -G audio,video bluecherry
 		fi
 		usermod -a -G video,audio,bluecherry,dialout,adm www-data || true
+		# for bluecherry group membership to take effect, restart web server:
+		systemctl restart nginx
 
 		;;
 esac