diff --git a/openbr/plugins/gui.cpp b/openbr/plugins/gui.cpp
index 9d97429..2d22e82 100644
--- a/openbr/plugins/gui.cpp
+++ b/openbr/plugins/gui.cpp
@@ -94,6 +94,8 @@ public slots:
     void createWindow()
     {
         delete window;
+        QApplication::instance()->removeEventFilter(this);
+
         window = new QLabel();
         window->setVisible(true);