diff --git a/src/ludus/scanner.clj b/src/ludus/scanner.clj
index 99049ab..bd8b391 100644
--- a/src/ludus/scanner.clj
+++ b/src/ludus/scanner.clj
@@ -313,6 +313,6 @@
       (recur (-> scanner (scan-token) (next-token))))))
 
 (do
-  (def source "abc nil")
+  (def source "@{")
 
   (pp/pprint (scan source)))