diff --git a/src/Plugin/views/argument/SearchApiFulltext.php b/src/Plugin/views/argument/SearchApiFulltext.php
index e357588..2ce829f 100644
--- a/src/Plugin/views/argument/SearchApiFulltext.php
+++ b/src/Plugin/views/argument/SearchApiFulltext.php
@@ -143,6 +143,7 @@ class SearchApiFulltext extends SearchApiStandard {
     }
     if ($this->options['conjunction'] != 'AND') {
       $this->query->setOption('conjunction', $this->options['conjunction']);
+      $this->query->getParseMode()->setConjunction($this->options['conjunction']);
     }
 
     $old = $this->query->getOriginalKeys();