4 files changed, 5 insertions, 4 deletions
diff --git a/lib/plugins/action.php b/lib/plugins/action.php
index 885bd7c96..a2ad969d7 100644
--- a/lib/plugins/action.php
+++ b/lib/plugins/action.php
@@ -17,7 +17,7 @@ class DokuWiki_Action_Plugin extends DokuWiki_Plugin {
      /**
       * Registers a callback function for a given event
       */
-      function register($controller) {
+      function register(Doku_Event_Handler $controller) {
         trigger_error('register() not implemented in '.get_class($this), E_USER_WARNING);
       }
 }
diff --git a/lib/plugins/popularity/action.php b/lib/plugins/popularity/action.php
index bf11efba6..1c7a2f65d 100644
--- a/lib/plugins/popularity/action.php
+++ b/lib/plugins/popularity/action.php
@@ -18,7 +18,7 @@ class action_plugin_popularity extends Dokuwiki_Action_Plugin {
     /**
      * Register its handlers with the dokuwiki's event controller
      */
-    function register(&$controller) {
+    function register(Doku_Event_Handler $controller) {
         $controller->register_hook('INDEXER_TASKS_RUN', 'AFTER',  $this, '_autosubmit', array());
     }
 
diff --git a/lib/plugins/safefnrecode/action.php b/lib/plugins/safefnrecode/action.php
index 5d3eaae3a..aae11c437 100644
--- a/lib/plugins/safefnrecode/action.php
+++ b/lib/plugins/safefnrecode/action.php
@@ -13,7 +13,7 @@ require_once DOKU_PLUGIN.'action.php';
 
 class action_plugin_safefnrecode extends DokuWiki_Action_Plugin {
 
-    public function register(Doku_Event_Handler &$controller) {
+    public function register(Doku_Event_Handler $controller) {
 
        $controller->register_hook('INDEXER_TASKS_RUN', 'BEFORE', $this, 'handle_indexer_tasks_run');
 
diff --git a/lib/plugins/testing/action.php b/lib/plugins/testing/action.php
index e829847b6..a242ab0b7 100644
--- a/lib/plugins/testing/action.php
+++ b/lib/plugins/testing/action.php
@@ -7,7 +7,8 @@
  * @author Tobias Sarnowski <tobias@trustedco.de>
  */
 class action_plugin_testing extends DokuWiki_Action_Plugin {
-    function register(&$controller) {
+
+    function register(Doku_Event_Handler $controller) {
         $controller->register_hook('DOKUWIKI_STARTED', 'AFTER', $this, 'dokuwikiStarted');
     }