diff --git a/README b/README
index 5081964..568c1cb 100644
--- a/README
+++ b/README
@@ -30,7 +30,7 @@ The policy server skips SPF checks for connections from the localhost (127.) and
 instead prepends and logs 'SPF skipped - localhost is always allowed.'  If you 
 have relays that you want to skip SPF checks for, you can add them to 
 relay_addresses on line 78 using standard CIDR notation in a space separated
-list.  For these addresses, 'X-Comment SPF skipped for whitelisted relay' is
+list.  For these addresses, 'X-Comment: SPF skipped for whitelisted relay' is
 prepended and logged.
 
 Error conditions within the policy server (that don't result in a crash) or from