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diff --git a/tests/sample-documents/DocBook-4.2-WHYNOT/images/warning.png b/tests/sample-documents/DocBook-4.2-WHYNOT/images/warning.png
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diff --git a/tests/sample-documents/DocBook-4.2-WHYNOT/images/warning.svg b/tests/sample-documents/DocBook-4.2-WHYNOT/images/warning.svg
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--- /dev/null
+++ b/tests/sample-documents/DocBook-4.2-WHYNOT/images/warning.svg
@@ -0,0 +1,17 @@
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