diff --git a/lib/hamlit/compiler.rb b/lib/hamlit/compiler.rb
index 1d679fe0..36f33f1a 100644
--- a/lib/hamlit/compiler.rb
+++ b/lib/hamlit/compiler.rb
@@ -34,8 +34,10 @@ module Hamlit
         compile_tag(node)
       when :plain
         compile_plain(node)
-      else
+      when :haml_comment
         [:multi]
+      else
+        raise InternalError.new("Unexpected node type: #{node.type}")
       end
     end
 
@@ -62,5 +64,8 @@ module Hamlit
     def compile_plain(node)
       [:static, node.value[:text]]
     end
+
+    class InternalError < RuntimeError
+    end
   end
 end