diff --git a/src/messenger/webim/libs/classes/request_processor.php b/src/messenger/webim/libs/classes/request_processor.php
index 7e16c37c..91ad67bc 100644
--- a/src/messenger/webim/libs/classes/request_processor.php
+++ b/src/messenger/webim/libs/classes/request_processor.php
@@ -150,8 +150,9 @@ abstract class RequestProcessor {
 							$arguments += empty($callback['arguments'])
 								? array()
 								: $callback['arguments'];
-							call_user_func_array($function, $arguments);
+							call_user_func_array($function, array($arguments));
 						}
+						return true;
 					} else {
 						// Process request
 						$arguments = $this->processRequest($request, false);