diff --git a/webprofiler/src/Controller/ToolbarController.php b/webprofiler/src/Controller/ToolbarController.php
index de0e240e5d2cc4500bd46322eb1032f694a877df..b79a18278709481e6cb0e39aa82f780e7d0b0ca9 100644
--- a/webprofiler/src/Controller/ToolbarController.php
+++ b/webprofiler/src/Controller/ToolbarController.php
@@ -62,7 +62,9 @@ class ToolbarController extends ControllerBase {
    *
    * @param Profile $profile
    *
-   * @return array
+   * @return \Symfony\Component\HttpFoundation\Response
+   *
+   * @throws \Exception
    */
   public function toolbarAction(Profile $profile) {
     $this->profiler->disable();
diff --git a/webprofiler/src/DataCollector/DrupalDataCollectorTrait.php b/webprofiler/src/DataCollector/DrupalDataCollectorTrait.php
index a523644a6d758785d578c4b777f9fbe27be1dc2e..8fdede4f96e6cf9196d0a06be81ea91412637bac 100644
--- a/webprofiler/src/DataCollector/DrupalDataCollectorTrait.php
+++ b/webprofiler/src/DataCollector/DrupalDataCollectorTrait.php
@@ -54,8 +54,6 @@ trait DrupalDataCollectorTrait {
    * @param $method
    *
    * @return array
-   *
-   * @throws \ReflectionException
    */
   public function getMethodData($class, $method) {
     $class = is_object($class) ? get_class($class) : $class;
diff --git a/webprofiler/src/DataCollector/RequestDataCollector.php b/webprofiler/src/DataCollector/RequestDataCollector.php
index 229a632ee9e95fc135699572e5d8e03546ce35d3..dc15848fd9d9223a23e4e6b99cb502050a5c0fd4 100644
--- a/webprofiler/src/DataCollector/RequestDataCollector.php
+++ b/webprofiler/src/DataCollector/RequestDataCollector.php
@@ -51,9 +51,8 @@ class RequestDataCollector extends BaseRequestDataCollector implements DrupalDat
   /**
    * @param $service_id
    * @param $callable
-   * @param $request
+   * @param \Symfony\Component\HttpFoundation\Request $request
    *
-   * @throws \ReflectionException
    */
   public function addAccessCheck($service_id, $callable, Request $request) {
     $this->accessCheck[$request->getPathInfo()][] = [
@@ -62,19 +61,6 @@ class RequestDataCollector extends BaseRequestDataCollector implements DrupalDat
     ];
   }
 
-  /**
-   * {@inheritdoc}
-   *
-   * In Symfony 3 the data for the RequestDataCollector are converted to string
-   * with \Symfony\Component\HttpKernel\DataCollector/DataCollector::cloneVar()
-   * in
-   * \Symfony\Component\HttpKernel\DataCollector\RequestDataCollector::lateCollect(),
-   * but for some reasons they aren't unserialized back to array later. At the
-   * moment we simply override that method to avoid conversion.
-   */
-  public function lateCollect() {
-  }
-
   /**
    * {@inheritdoc}
    */