diff --git a/debian/cryptobox-server.init b/debian/cryptobox-server.init
index 61050c3..61ea318 100644
--- a/debian/cryptobox-server.init
+++ b/debian/cryptobox-server.init
@@ -17,7 +17,7 @@
 ### END INIT INFO
 
 # read the default setting file, if it exists
-[ -r /etc/default/cryptobox-server ] && source /etc/default/cryptobox-server
+[ -r /etc/default/cryptobox-server ] && . /etc/default/cryptobox-server
 
 # set default values (if not defined in /etc/default/cryptobox-server)
 NO_START=${NO_START:-0}