diff --git a/setup/tools/dbc.class.php b/setup/tools/dbc.class.php
index 036efb41..16a47fc0 100644
--- a/setup/tools/dbc.class.php
+++ b/setup/tools/dbc.class.php
@@ -427,7 +427,7 @@ class DBC
 
                     $outIdx = $j + $offset;
 
-                    if (isset($row[$outIdx]) && $type != 'S')
+                    if (!empty($row[$outIdx]) && $type != 'S')
                         continue;
 
                     switch ($type)