diff --git a/src/ludus/interpreter.clj b/src/ludus/interpreter.clj
index b5cea85..88fa36f 100644
--- a/src/ludus/interpreter.clj
+++ b/src/ludus/interpreter.clj
@@ -274,7 +274,10 @@
 
   (def source "
 
+    let foo = do 1 > inc > inc 
+      > inc
 
+    foo
 
 	")