diff --git a/src/ludus/interpreter.clj b/src/ludus/interpreter.clj
index 60782b5..bffcaa5 100644
--- a/src/ludus/interpreter.clj
+++ b/src/ludus/interpreter.clj
@@ -292,16 +292,6 @@
 
 ")
 
-(defn fib [n]
-  (case n
-    0 1
-
-    1 1
-
-    (+ (fib (- n 1)) (fib (- n 2)))))
-
-(fib 35)
-