diff --git a/LICENSES/LicenseRef-private.txt b/LICENSES/LicenseRef-private.txt
new file mode 100644
index 0000000000000000000000000000000000000000..c72f93d1647da62185cd153eda5181b47f4c638b
--- /dev/null
+++ b/LICENSES/LicenseRef-private.txt
@@ -0,0 +1,3 @@
+This image is proprietary and confidential.
+Unauthorized copying, sharing, or distribution is prohibited.
+© 2023 LH2, University of Stuttgart. All rights reserved.
diff --git a/REUSE.toml b/REUSE.toml
index 2a8b4cf77ae61fa6bad22590acaae02c8d89bf2f..e558e30764568ca94e5ef9f024b66d628d403f96 100644
--- a/REUSE.toml
+++ b/REUSE.toml
@@ -31,6 +31,10 @@ path = "slides/img/*"
 SPDX-FileCopyrightText = "DuMux-Course contributors, see AUTHORS.md in root folder"
 SPDX-License-Identifier = "CC-BY-4.0"
 
+[[annotations]]
+path = "exercises/**"
+SPDX-FileCopyrightText = "DuMux-Course contributors, see AUTHORS.md in root folder"
+SPDX-License-Identifier = "CC-BY-4.0"
 
 [[annotations]]
 path = "slides/img/03_uio_full_logo_no_pos.png"
@@ -149,4 +153,4 @@ SPDX-License-Identifier = "CC0-1.0"
 [[annotations]]
 path = "slides/img/lh2_2021.jpg"
 SPDX-FileCopyrightText = "LH2, University of Stuttgart"
-SPDX-License-Identifier = "NO-REDISTRIBUTION"
+SPDX-License-Identifier = "LicenseRef-private"