diff --git a/test/test_grammars.rb b/test/test_grammars.rb
index 0bfb642c..f010b79b 100644
--- a/test/test_grammars.rb
+++ b/test/test_grammars.rb
@@ -129,6 +129,8 @@ class TestGrammars < Minitest::Test
       "MIT"
     elsif content.include?("unlicense.org")
       "unlicense"
+    elsif content.include?("http://www.wtfpl.net/txt/copying/")
+      "WTFPL"
     end
   end
 end