diff --git a/utils/generate-cyclonedx b/utils/generate-cyclonedx
index 9d3baa23f1..1fbf020a3d 100755
--- a/utils/generate-cyclonedx
+++ b/utils/generate-cyclonedx
@@ -562,6 +562,10 @@ def main():
     filtered_show_info_dict = {k: v for k, v in show_info_dict.items()
                                if ("rootfs" not in v["type"]) and (args.virtual or v["virtual"] is False)}
 
+    # Only keep the first two numbers of the 'cdx-version' argument.
+    # While the patch revision (e.g. 1.6.2) can be used for the license list,
+    # only the first two numbers (e.g. 1.6) are valid in the schema and the
+    # 'specVersion'.
     cdx_spec_version = ".".join(args.cdx_version.split(".")[:2])
     cyclonedx_dict = {
         "bomFormat": "CycloneDX",