diff --git a/LICENSES/other/CDDL-1.0 b/LICENSES/other/CDDL-1.0
index 195a1687930a..25f614276ddd 100644
--- a/LICENSES/other/CDDL-1.0
+++ b/LICENSES/other/CDDL-1.0
@@ -1,10 +1,14 @@
 Valid-License-Identifier: CDDL-1.0
 SPDX-URL: https://spdx.org/licenses/CDDL-1.0.html
 Usage-Guide:
+  Do NOT use. The CDDL-1.0 is not GPL compatible. It may only be used for
+  dual-licensed files where the other license is GPL compatible.
+  If you end up using this it MUST be used together with a GPL2 compatible
+  license using "OR".
   To use the Common Development and Distribution License 1.0 put the
   following SPDX tag/value pair into a comment according to the placement
   guidelines in the licensing rules documentation:
-    SPDX-License-Identifier: CDDL-1.0
+    SPDX-License-Identifier: ($GPL-COMPATIBLE-ID OR CDDL-1.0)
 
 License-Text: