diff --git a/src/calibre/gui2/geometry.py b/src/calibre/gui2/geometry.py
index d3a6c95e1e..af765daac1 100644
--- a/src/calibre/gui2/geometry.py
+++ b/src/calibre/gui2/geometry.py
@@ -146,9 +146,9 @@ def _restore_to_new_screen(self: QWidget, s: QScreen, saved_data: dict) -> bool:
     sz = QSize(min(saved_geometry.width(), available_size.width()), min(saved_geometry.height(), available_size.height()))
     if not sz.isValid():
         return False
-    max_left = available_geometry.left() + (available_size.width() - sz.width())
-    max_top = available_geometry.top() + (available_size.height() - sz.height())
-    geometry = QRect(min(saved_geometry.left(), max_left), min(saved_geometry.top(), max_top), sz.width(), sz.height())
+    left = available_geometry.left() + (available_size.width() - sz.width()) // 2
+    top = available_geometry.top() + (available_size.height() - sz.height()) // 2
+    geometry = QRect(left, top, sz.width(), sz.height())
     return _do_restore(self, s, geometry, saved_data)