diff --git a/modules/mono/editor/bindings_generator.cpp b/modules/mono/editor/bindings_generator.cpp
index 7e944ed4a58..620b031ddbc 100644
--- a/modules/mono/editor/bindings_generator.cpp
+++ b/modules/mono/editor/bindings_generator.cpp
@@ -3058,17 +3058,17 @@ bool BindingsGenerator::_arg_default_value_from_variant(const Variant &p_val, Ar
 		} break;
 		case Variant::AABB: {
 			AABB aabb = p_val.operator ::AABB();
-			r_iarg.default_argument = "new AABB(new Vector3" + aabb.position.operator String() + ", new Vector3" + aabb.position.operator String() + ")";
+			r_iarg.default_argument = "new AABB(new Vector3" + aabb.position.operator String() + ", new Vector3" + aabb.size.operator String() + ")";
 			r_iarg.def_param_mode = ArgumentInterface::NULLABLE_VAL;
 		} break;
 		case Variant::RECT2: {
 			Rect2 rect = p_val.operator Rect2();
-			r_iarg.default_argument = "new Rect2(new Vector2" + rect.position.operator String() + ", new Vector2" + rect.position.operator String() + ")";
+			r_iarg.default_argument = "new Rect2(new Vector2" + rect.position.operator String() + ", new Vector2" + rect.size.operator String() + ")";
 			r_iarg.def_param_mode = ArgumentInterface::NULLABLE_VAL;
 		} break;
 		case Variant::RECT2I: {
 			Rect2i rect = p_val.operator Rect2i();
-			r_iarg.default_argument = "new Rect2i(new Vector2i" + rect.position.operator String() + ", new Vector2i" + rect.position.operator String() + ")";
+			r_iarg.default_argument = "new Rect2i(new Vector2i" + rect.position.operator String() + ", new Vector2i" + rect.size.operator String() + ")";
 			r_iarg.def_param_mode = ArgumentInterface::NULLABLE_VAL;
 		} break;
 		case Variant::COLOR: