diff --git a/src/messenger/webim/libs/classes/mibew_api_window_interaction.php b/src/messenger/webim/libs/classes/mibew_api_chat_interaction.php
similarity index 94%
rename from src/messenger/webim/libs/classes/mibew_api_window_interaction.php
rename to src/messenger/webim/libs/classes/mibew_api_chat_interaction.php
index 4afd1a27..5cb3e4fa 100644
--- a/src/messenger/webim/libs/classes/mibew_api_window_interaction.php
+++ b/src/messenger/webim/libs/classes/mibew_api_chat_interaction.php
@@ -18,7 +18,7 @@
 /**
  * Implements Mibew Core - Mibew Chat Window interaction
  */
-class MibewAPIWindowInteraction extends MibewAPIInteraction {
+class MibewAPIChatInteraction extends MibewAPIInteraction {
 	/**
 	 * Defines obligatory arguments and default values for them
 	 * @var array
diff --git a/src/messenger/webim/libs/classes/thread_processor.php b/src/messenger/webim/libs/classes/thread_processor.php
index 42c5cc03..a2929249 100644
--- a/src/messenger/webim/libs/classes/thread_processor.php
+++ b/src/messenger/webim/libs/classes/thread_processor.php
@@ -119,7 +119,7 @@ class ThreadProcessor extends RequestProcessor {
 	 * @return MibewAPI
 	 */
 	protected function getMibewAPIInstance() {
-		return MibewAPI::getAPI('MibewAPIWindowInteraction');
+		return MibewAPI::getAPI('MibewAPIChatInteraction');
 	}
 
 	/**
diff --git a/src/messenger/webim/thread.php b/src/messenger/webim/thread.php
index b90ebd3d..eb583ac1 100644
--- a/src/messenger/webim/thread.php
+++ b/src/messenger/webim/thread.php
@@ -21,7 +21,7 @@ require_once('libs/operator.php');
 require_once('libs/classes/thread.php');
 require_once('libs/classes/mibew_api.php');
 require_once('libs/classes/mibew_api_interaction.php');
-require_once('libs/classes/mibew_api_window_interaction.php');
+require_once('libs/classes/mibew_api_chat_interaction.php');
 require_once('libs/classes/mibew_api_execution_context.php');
 require_once('libs/classes/thread_processor.php');