diff --git a/src/Symfony/Component/DependencyInjection/Argument/BoundArgument.php b/src/Symfony/Component/DependencyInjection/Argument/BoundArgument.php
index 2c777a16fa..4a0054e20b 100644
--- a/src/Symfony/Component/DependencyInjection/Argument/BoundArgument.php
+++ b/src/Symfony/Component/DependencyInjection/Argument/BoundArgument.php
@@ -53,7 +53,7 @@ final class BoundArgument implements ArgumentInterface
      */
     public function setValues(array $values)
     {
-        if (5 === count($values)) {
+        if (5 === \count($values)) {
             list($this->value, $this->identifier, $this->used, $this->type, $this->file) = $values;
         } else {
             list($this->value, $this->identifier, $this->used) = $values;