diff --git a/modelsim/sim_activation_tb.tcl b/modelsim/sim_activation_tb.tcl
index 09c0887..1155ec0 100644
--- a/modelsim/sim_activation_tb.tcl
+++ b/modelsim/sim_activation_tb.tcl
@@ -1,3 +1,7 @@
+# Copyright 2024 ETH Zurich and University of Bologna.
+# Licensed under the Apache License, Version 2.0, see LICENSE for details.
+# SPDX-License-Identifier: Apache-2.0
+
 set DEBUG ON
 
 # Set working library.