diff --git a/qframelesswindow/linux/__init__.py b/qframelesswindow/linux/__init__.py
index 2ba5975..b4d1f86 100644
--- a/qframelesswindow/linux/__init__.py
+++ b/qframelesswindow/linux/__init__.py
@@ -22,7 +22,7 @@ def _initFrameless(self):
         self._isResizeEnabled = True
 
         self.updateFrameless()
-        QCoreApplication.instance().installEventFilter(self)
+        self.installEventFilter(QCoreApplication.instance())
 
         self.titleBar.raise_()
         self.resize(500, 500)