diff --git a/qt/aqt/clayout.py b/qt/aqt/clayout.py
index c06c1e4ff..d137c1eb4 100644
--- a/qt/aqt/clayout.py
+++ b/qt/aqt/clayout.py
@@ -216,6 +216,7 @@ class CardLayout(QDialog):
 
         self.current_editor_index = 0
         self.tform.edit_area.setAcceptRichText(False)
+        self.tform.edit_area.setFont(QFont("Courier"))
         if qtminor < 10:
             self.tform.edit_area.setTabStopWidth(30)
         else: