diff --git a/test_scripts/display_attr_lines_wiget.py b/test_scripts/display_attr_lines_wiget.py
index b1d34f8..70d1dd0 100644
--- a/test_scripts/display_attr_lines_wiget.py
+++ b/test_scripts/display_attr_lines_wiget.py
@@ -33,6 +33,13 @@ class TestWidget(urwid.WidgetWrap):
         elif key == "down":
             self.lines.upper_offset -= 1
 
+    def mouse_event(self, size, event, button, col, row, focus):
+        if event == "mouse press":
+            if button == 4:
+                self.lines.upper_offset += 1
+            if button == 5:
+                self.lines.upper_offset -= 1
+
 def main():
     screen = urwid.curses_display.Screen()
     palette = [
diff --git a/test_scripts/display_pressed_keys.py b/test_scripts/display_pressed_keys.py
index 2bab122..f07da43 100644
--- a/test_scripts/display_pressed_keys.py
+++ b/test_scripts/display_pressed_keys.py
@@ -19,7 +19,7 @@ class TestWidget(urwid.WidgetWrap):
         self.text.set_text("\n".join(self.last_keys))
 
     def mouse_event(self, size, event, button, col, row, focus):
-        self.last_keys.append(f"{size!r} {event!r} {button!r} ({row}, {col})")
+        self.last_keys.append(f"{event!r} {button!r} ({row}, {col})")
         self.last_keys = self.last_keys[-self.KEY_LIMIT:]
         self.text.set_text("\n".join(self.last_keys))