diff --git a/lib/asciidoctor/standoc/utils.rb b/lib/asciidoctor/standoc/utils.rb
index 6818eb78..6c474a57 100644
--- a/lib/asciidoctor/standoc/utils.rb
+++ b/lib/asciidoctor/standoc/utils.rb
@@ -180,7 +180,8 @@ def datauri2mime1(file, imgdata)
         type
       end
 
-      SUBCLAUSE_XPATH = "//clause[not(parent::sections)]".freeze
+      SUBCLAUSE_XPATH = "//clause[not(parent::sections)]"\
+        "[not(ancestor::boilerplate)]".freeze
     end
   end
 end