diff --git a/lib/imchannel.php b/lib/imchannel.php
index a052299905..18ba3f55f0 100644
--- a/lib/imchannel.php
+++ b/lib/imchannel.php
@@ -47,14 +47,14 @@ class IMChannel extends Channel
     function output($user, $text)
     {
         $text = '['.common_config('site', 'name') . '] ' . $text;
-        $this->imPlugin->sendMessage($this->imPlugin->get_screenname($user), $text);
+        $this->imPlugin->sendMessage($this->imPlugin->getScreenname($user), $text);
     }
 
     function error($user, $text)
     {
         $text = '['.common_config('site', 'name') . '] ' . $text;
 
-        $screenname = $this->imPlugin->get_screenname($user);
+        $screenname = $this->imPlugin->getScreenname($user);
         if($screenname){
             $this->imPlugin->sendMessage($screenname, $text);
             return true;
diff --git a/lib/implugin.php b/lib/implugin.php
index f4504f5253..72d1456f4d 100644
--- a/lib/implugin.php
+++ b/lib/implugin.php
@@ -208,7 +208,7 @@ abstract class ImPlugin extends Plugin
      *
      * @return string screenname of that user
      */
-    function get_screenname($user)
+    function getScreenname($user)
     {
         $user_im_prefs = $this->getUserImPrefsFromUser($user);
         if ($user_im_prefs) {