diff --git a/src/rviz/viewport_mouse_event.h b/src/rviz/viewport_mouse_event.h
index 8db613ffa..00f3e883e 100644
--- a/src/rviz/viewport_mouse_event.h
+++ b/src/rviz/viewport_mouse_event.h
@@ -54,7 +54,7 @@ class ViewportMouseEvent
     : panel(p)
     , viewport(vp)
     , type(e->type())
-#if QT_VERSION >= QT_VERSION_CHECK(5, 15, 0)
+#if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
     , x(e->position().x())
     , y(e->position().y())
 #else