diff --git a/share/html/Ticket/Elements/ShowAssets b/share/html/Ticket/Elements/ShowAssets
index e6c60bb7285..51bfbd152ed 100644
--- a/share/html/Ticket/Elements/ShowAssets
+++ b/share/html/Ticket/Elements/ShowAssets
@@ -214,7 +214,7 @@ if ($ShowRelatedTickets) {
     <label><&|/l&>Add an asset to this ticket:</&></label>
     <div class="form-row">
       <div class="form-group mx-sm-3 mb-2">
-        <input data-autocomplete="Assets" class="form-control mb-2" size="10" name="<% $Ticket->id %>-RefersTo" placeholder="<&|/l&>Asset #</&>" type="text">
+        <input data-autocomplete="Assets" class="form-control mb-2" size="10" name="<% $Ticket->id %>-RefersTo" placeholder="<&|/l&>Asset #</&>" data-autocomplete-exclude="<% join(',', @linked_assets) |n %>" type="text">
       </div>
       <button type="submit" name="AddAsset" value="Add" class="button btn btn-primary form-control mb-2">Add</button>
     </div>