diff --git a/Koha/Account/Line.pm b/Koha/Account/Line.pm
index 185c753772..2b3cd0c36b 100644
--- a/Koha/Account/Line.pm
+++ b/Koha/Account/Line.pm
@@ -912,7 +912,8 @@ sub renewable {
     my $renew_result = $line->renew_item;
 
 Conditionally attempt to renew an item and return the outcome. This is
-as a consequence of the fine on an item being fully paid off
+as a consequence of the fine on an item being fully paid off.
+Caller must call renewable before.
 
 =cut