diff --git a/scene/main/window.cpp b/scene/main/window.cpp
index c7cd52124ac..3dbd96a53f7 100644
--- a/scene/main/window.cpp
+++ b/scene/main/window.cpp
@@ -1193,10 +1193,7 @@ void Window::_update_viewport_size() {
 		}
 	}
 
-	if (old_size != size) {
-		old_size = size;
-		notification(NOTIFICATION_WM_SIZE_CHANGED);
-	}
+	notification(NOTIFICATION_WM_SIZE_CHANGED);
 
 	if (embedder) {
 		embedder->_sub_window_update(this);
diff --git a/scene/main/window.h b/scene/main/window.h
index 73dba67f455..768bd407bb3 100644
--- a/scene/main/window.h
+++ b/scene/main/window.h
@@ -116,7 +116,6 @@ private:
 	mutable Size2i size = Size2i(DEFAULT_WINDOW_SIZE, DEFAULT_WINDOW_SIZE);
 	mutable Size2i min_size;
 	mutable Size2i max_size;
-	mutable Size2i old_size = size;
 	mutable Vector<Vector2> mpath;
 	mutable Mode mode = MODE_WINDOWED;
 	mutable bool flags[FLAG_MAX] = {};