1 files changed, 3 insertions, 0 deletions
diff --git a/tools/checklicenses.py b/tools/checklicenses.py
index 6465f45c65..b242c993bc 100755
--- a/tools/checklicenses.py
+++ b/tools/checklicenses.py
@@ -137,6 +137,9 @@ PATH_SPECIFIC_WHITELISTED_LICENSES = {
     'docbook/custom_layer_pdf.xsl': [
         'UNKNOWN',
     ],
+    'docbook/custom_layer_chm.xsl': [
+        'UNKNOWN',
+    ],
     'fix': [
         'UNKNOWN',
     ],