diff --git a/Service/Generator.php b/Service/Generator.php
index 1321b38..02da71d 100644
--- a/Service/Generator.php
+++ b/Service/Generator.php
@@ -137,6 +137,8 @@ class Generator
         $all_terms = $matches[1];
         foreach ($all_terms as $term)
         {
+            if ($term == null)
+                continue;
             $final_text = str_replace('[' . $term . ']', $this->translator->trans($term), $final_text);
         }