diff --git a/sinkronisasi.include.php b/sinkronisasi.include.php
index af9bf37..06767e7 100644
--- a/sinkronisasi.include.php
+++ b/sinkronisasi.include.php
@@ -188,7 +188,10 @@ function sinkronisasi_pair_with_local_tid($term) {
 
 function sinkronisasi_pair_with_parent($term) {
     if ($term->_parent) {
-        $term->parent = sinkronisasi_get_term_by_field_original_tid($term->_parent);
+        $parent_term = sinkronisasi_get_term_by_field_original_tid($term->_parent);
+        if ($parent_term)
+            $term->parent = $parent_term->tid;
+        }
         unset($term->_parent);
     }