diff --git a/Query/FunctionScoreQuery.php b/Query/FunctionScoreQuery.php
index 4bdf1d4b831e50d3ffb58fe46c455f62dd47f7ec..7584eb8d9b2cc0fbdf2ae28deeee020d02ac7aee 100644
--- a/Query/FunctionScoreQuery.php
+++ b/Query/FunctionScoreQuery.php
@@ -41,7 +41,7 @@ class FunctionScoreQuery implements BuilderInterface
      * @param array            $functions
      * @param array            $parameters
      */
-    public function __construct(BuilderInterface $filterOrQuery, $functions, array $parameters = [])
+    public function __construct(BuilderInterface $filterOrQuery, array $functions, array $parameters = [])
     {
         $this->dslType = array_slice(explode('\\', get_class($filterOrQuery)), -2, 1)[0];
         $this->filterOrQuery = $filterOrQuery;