diff --git a/pt2d/gui/mainWindow.py b/pt2d/gui/mainWindow.py
index f706247a4caaf3d2be633c6f009d851c5ec72da1..a102b3d66646871efe906f1b06c70c162b9e11e5 100644
--- a/pt2d/gui/mainWindow.py
+++ b/pt2d/gui/mainWindow.py
@@ -20,7 +20,7 @@ class MainWindow(QMainWindow):
         It initializes various attributes related to the image processing and user interface.
         """
         super().__init__()
-        self.setWindowTitle("Test GUI")
+        self.setWindowTitle("Path Tracing in 2D images")
 
         self._last_loaded_pixmap = None
         self._circle_calibrated_radius = 6