diff --git a/scene/gui/check_box.cpp b/scene/gui/check_box.cpp
index 309152ba8f..2aa82bc5f5 100644
--- a/scene/gui/check_box.cpp
+++ b/scene/gui/check_box.cpp
@@ -59,7 +59,7 @@ bool CheckBox::is_radio()
     Node* parent = this;
     do {
         parent = parent->get_parent();
-        if (dynamic_cast< ButtonGroup* >(parent))
+	if (parent->cast_to<ButtonGroup>())
             break;
     } while (parent);