diff --git a/qt/pe/details_dialog.py b/qt/pe/details_dialog.py
index 7fe89aa0..d75fc1cb 100644
--- a/qt/pe/details_dialog.py
+++ b/qt/pe/details_dialog.py
@@ -19,7 +19,6 @@ tr = trget("ui")
 class DetailsDialog(DetailsDialogBase):
     def __init__(self, parent, app):
         self.vController = None
-        self.app = app
         super().__init__(parent, app)
 
     def _setupUi(self):