diff --git a/src/petab_gui/app.py b/src/petab_gui/app.py
index 189acf3..6c8694e 100644
--- a/src/petab_gui/app.py
+++ b/src/petab_gui/app.py
@@ -37,6 +37,7 @@ def __init__(self):
 
         # Load the stylesheet
         # self.apply_stylesheet()
+        self.setWindowIcon(get_icon())
         self.model = PEtabModel()
         self.view = MainWindow()
         self.view.setWindowIcon(get_icon())