diff --git a/spec/renderers_spec.moon b/spec/renderers_spec.moon
index 710f65b..cfd27b4 100644
--- a/spec/renderers_spec.moon
+++ b/spec/renderers_spec.moon
@@ -69,6 +69,14 @@ this code block has an unknown label
 
       assert.same [[<div class="sourceCode"><pre class="sourceCode"><code>this code block has an unknown label</code></pre></div>]], out
 
+    it "doesn't highlight unlabeled code blocks", ->
+      out = flatten_html render [[
+```
+this code block has no label
+```]]
+
+      assert.same [[<div class="sourceCode"><pre class="sourceCode"><code>this code block has no label</code></pre></div>]], out
+
     it "defaults to pandoc highlighting when pygments fails to recognize code language", ->
       out = flatten_html render [[
 ```heex