diff --git a/Shorewall/common.def b/Shorewall/common.def
index 50edd3471..cde58a555 100644
--- a/Shorewall/common.def
+++ b/Shorewall/common.def
@@ -8,7 +8,7 @@
 #
 # Do not modify this file -- if you wish to change these rules, create
 # /etc/shorewall/common to replace it. It is suggested that you include
-# the command "source /etc/shorewall/common.def" in your
+# the command ". /etc/shorewall/common.def" in your
 # /etc/shorewall/common file so that you will continue to get the
 # advantage of new releases of this file.
 #