diff --git a/src/plugins/platforms/xcb/qxcbwindow.cpp b/src/plugins/platforms/xcb/qxcbwindow.cpp
index 233514a181..c0076a9977 100644
--- a/src/plugins/platforms/xcb/qxcbwindow.cpp
+++ b/src/plugins/platforms/xcb/qxcbwindow.cpp
@@ -308,11 +308,6 @@ void QXcbWindow::create()
         return;
     }
 
-    // Determine gravity from initial position. Do not change
-    // later as it will cause the window to move uncontrollably.
-    m_gravity = positionIncludesFrame(window()) ?
-                XCB_GRAVITY_NORTH_WEST : XCB_GRAVITY_STATIC;
-
     const quint32 mask = XCB_CW_BACK_PIXMAP | XCB_CW_OVERRIDE_REDIRECT | XCB_CW_SAVE_UNDER | XCB_CW_EVENT_MASK;
     const quint32 values[] = {
         // XCB_CW_BACK_PIXMAP
@@ -732,6 +727,9 @@ void QXcbWindow::show()
 
         xcb_set_wm_hints(xcb_connection(), m_window, &hints);
 
+        m_gravity = positionIncludesFrame(window()) ?
+                    XCB_GRAVITY_NORTH_WEST : XCB_GRAVITY_STATIC;
+
         // update WM_NORMAL_HINTS
         propagateSizeHints();