diff --git a/cgi-bin/lc.cgi b/cgi-bin/lc.cgi
index 452fb300..d8bbb13c 100755
--- a/cgi-bin/lc.cgi
+++ b/cgi-bin/lc.cgi
@@ -26,7 +26,7 @@ import linkcheck.lc_cgi
 # log errors to stdout
 sys.stderr = sys.stdout
 
-# access
+# access: a list of IP numbers
 ALLOWED_HOSTS = ['127.0.0.1']
 ALLOWED_SERVERS = ['127.0.0.1']
 # uncomment the following lines to test your CGI values
diff --git a/cgi-bin/lc.fcgi b/cgi-bin/lc.fcgi
index 8ae6a65f..3728ce88 100755
--- a/cgi-bin/lc.fcgi
+++ b/cgi-bin/lc.fcgi
@@ -20,7 +20,7 @@ import fcgi
 import linkcheck
 import linkcheck.lc_cgi
 
-# access
+# access: a list of IP numbers
 ALLOWED_HOSTS = ['127.0.0.1']
 ALLOWED_SERVERS = ['127.0.0.1']
 # main