diff --git a/g13gui/bitwidgets/x11displaydevice.py b/g13gui/bitwidgets/x11displaydevice.py
index 546c556..d76f393 100644
--- a/g13gui/bitwidgets/x11displaydevice.py
+++ b/g13gui/bitwidgets/x11displaydevice.py
@@ -46,17 +46,17 @@ class X11DisplayDevice(DisplayDevice, threading.Thread):
 
             points = []
             for x in range(0, 160):
-                for y in range(0, 48):
+                for y in range(0, 42):
                     if image.getpixel((x, y)) == 1:
                         points.append((x, y))
 
-            self._win.fill_rectangle(self._inversegc, 0, 0, 160, 48)
+            self._win.fill_rectangle(self._inversegc, 0, 0, 160, 42)
             self._win.poly_point(self._gc, X.CoordModeOrigin, points)
 
     def createWindow(self):
         self._screen = self._display.screen()
         self._win = self._screen.root.create_window(
-            0, 0, 160, 48, 2,
+            0, 0, 160, 42, 2,
             self._screen.root_depth,
             X.InputOutput,
             X.CopyFromParent,
@@ -75,7 +75,7 @@ class X11DisplayDevice(DisplayDevice, threading.Thread):
         self._win.set_wm_normal_hints(
             flags=(Xutil.PPosition | Xutil.PSize | Xutil.PMinSize),
             min_width=160,
-            min_height=48)
+            min_height=42)
         self._win.map()
 
     @property