diff --git a/C4/Reserves.pm b/C4/Reserves.pm
index 585d1e56b2..1dc6f72ab8 100644
--- a/C4/Reserves.pm
+++ b/C4/Reserves.pm
@@ -2081,9 +2081,9 @@ sub ReserveSlip {
         tables => {
             'reserves'    => $reserve,
             'branches'    => $reserve->{branchcode},
-            'borrowers'   => $reserve,
-            'biblio'      => $reserve,
-            'items'       => $reserve,
+            'borrowers'   => $reserve->{borrowernumber},
+            'biblio'      => $reserve->{biblionumber},
+            'items'       => $reserve->{itemnumber},
         },
     );
 }