diff --git a/hesabixCore/src/Service/Explore.php b/hesabixCore/src/Service/Explore.php
index 71a7a2f..a759dd7 100644
--- a/hesabixCore/src/Service/Explore.php
+++ b/hesabixCore/src/Service/Explore.php
@@ -214,11 +214,14 @@ class Explore
                     'name' => $item->getUnit()->getName(),
                     'floatNumber' => $item->getUnit()->getFloatNumber(),
                 ],
-                'cat'=>$item->getCat()->getName()
             ];
             if ($des) {
                 $result['des'] = $des;
             }
+            $result['cat'] = '';
+            if ($item->getCat()) {
+                $result['cat'] = $item->getCat()->getName();
+            }
             return $result;
         }