diff --git a/functions b/functions
index f33fd25..8eeb032 100644
--- a/functions
+++ b/functions
@@ -400,7 +400,8 @@
 # initialized yet, just save the configuration selection and call back later
 # to validate it.
 #
-# ``$1`` - the name of the database backend to use (mysql, postgresql, ...)
+# ``$1`` - the name of the database backend to use (only mysql is currently
+# supported)
 function use_database {
     if [[ -z "$DATABASE_BACKENDS" ]]; then
         # No backends registered means this is likely called from ``localrc``