diff --git a/fts.php b/fts.php
index 784fc57..17a040c 100644
--- a/fts.php
+++ b/fts.php
@@ -76,6 +76,8 @@ class fts
   public function searchSQL ($query, $dblayeroo, $fields)
   {
     $regexes = $this->search ($query);
+    if (empty ($regexes["operator"]))
+      return array ();
     // Clone the object to not modify a previously defined query
     $dbl = clone $dblayeroo;
     $dbl->clearRequest ();