diff --git a/src/lib/Query/Content/CriterionVisitor/MultipleFieldsFullText.php b/src/lib/Query/Content/CriterionVisitor/MultipleFieldsFullText.php
index b3e02cd..958d661 100644
--- a/src/lib/Query/Content/CriterionVisitor/MultipleFieldsFullText.php
+++ b/src/lib/Query/Content/CriterionVisitor/MultipleFieldsFullText.php
@@ -145,8 +145,8 @@ private function getQueryFields(Criterion $criterion)
             }
         }
         foreach ($criterion->metaBoost as $field => $boost) {
-            $queryFields[] = "meta_{$field}_text_t^{$boost}";
-            $queryFields[] = "meta_{$field}_text_t_raw^{$boost}";
+            $queryFields[] = "meta_{$field}__text_t^{$boost}";
+            $queryFields[] = "meta_{$field}__text_t_raw^{$boost}";
         }
 
         return implode(' ', $queryFields);