diff --git a/openpype/tools/loader/app.py b/openpype/tools/loader/app.py
index ec8f56e74b..d73a977ac6 100644
--- a/openpype/tools/loader/app.py
+++ b/openpype/tools/loader/app.py
@@ -26,17 +26,6 @@ module = sys.modules[__name__]
 module.window = None
 
 
-# Register callback on task change
-# - callback can't be defined in Window as it is weak reference callback
-#   so `WeakSet` will remove it immediately
-def on_context_task_change(*args, **kwargs):
-    if module.window:
-        module.window.on_context_task_change(*args, **kwargs)
-
-
-register_event_callback("taskChanged", on_context_task_change)
-
-
 class LoaderWindow(QtWidgets.QDialog):
     """Asset loader interface"""
 
@@ -195,6 +184,8 @@ class LoaderWindow(QtWidgets.QDialog):
 
         self._first_show = True
 
+        register_event_callback("taskChanged", self.on_context_task_change)
+
     def resizeEvent(self, event):
         super(LoaderWindow, self).resizeEvent(event)
         self._overlay_frame.resize(self.size())