diff --git a/lisp.md b/lisp.md
index 9421afa..a8f9074 100644
--- a/lisp.md
+++ b/lisp.md
@@ -56,7 +56,7 @@ argument, a list of string describing the types for the generic method.
 ```
 (cond
   (> 1 2) t
-  (t) f)
+  t f)
 ```
 
 **if**: a conditional. `(if t 1 2)`