diff --git a/C4/Items.pm b/C4/Items.pm
index 300e87db22..bd708a2e35 100644
--- a/C4/Items.pm
+++ b/C4/Items.pm
@@ -797,7 +797,7 @@ sub GetItemsInfo {
     }
 
     return $serial
-        ? sort { ($b->{'publisheddate'} || $b->{'enumchron'}) cmp ($a->{'publisheddate'} || $a->{'enumchron'}) } @results
+        ? sort { ($b->{'publisheddate'} || $b->{'enumchron'} || "") cmp ($a->{'publisheddate'} || $a->{'enumchron'} || "") } @results
         : @results;
 }