diff --git a/panda/src/tinydisplay/tinyXGraphicsWindow.cxx b/panda/src/tinydisplay/tinyXGraphicsWindow.cxx
index f5d7d8f7a3..6f0b20d8bb 100644
--- a/panda/src/tinydisplay/tinyXGraphicsWindow.cxx
+++ b/panda/src/tinydisplay/tinyXGraphicsWindow.cxx
@@ -314,6 +314,9 @@ process_events() {
         // A normal window may be resized by the user at will.
         properties.set_size(event.xconfigure.width, event.xconfigure.height);
         system_changed_properties(properties);
+        ZB_resize(_frame_buffer, NULL, _properties.get_x_size(), _properties.get_y_size());
+        _pitch = _properties.get_x_size() * _bytes_per_pixel;
+        create_ximage();
       }
       break;