1 files changed, 1 insertions, 0 deletions
diff --git a/scene/main/viewport.h b/scene/main/viewport.h
index aaa640e0e6..22a97a9888 100644
--- a/scene/main/viewport.h
+++ b/scene/main/viewport.h
@@ -39,6 +39,7 @@
 */
 
 class Camera;
+class Camera2D;
 class Listener;
 class Control;
 class CanvasItem;