diff --git a/spectrum/src/sample2.cfg b/spectrum/src/sample2.cfg
index 0da3b1ecbbc380ee5d940a93155993c0a79d379b..cc0a7aef8e0d611c4f98a0f23a7415d0a490269a 100644
--- a/spectrum/src/sample2.cfg
+++ b/spectrum/src/sample2.cfg
@@ -96,6 +96,10 @@ type = none
 # Prefix used for tables
 #prefix = jabber_
 
+# Connection string (for pqxx only!)
+# If you set this, it ignores every other database option except for type and prefix.
+#connectionstring = host=localhost user=specturm password=secret
+
 [registration]
 # Enable public registrations
 enable_public_registration=1