diff --git a/beautiful-racket-demo/read-only-demo/test.rkt b/beautiful-racket-demo/read-only-demo/test.rkt
index 212fac3..3966d68 100644
--- a/beautiful-racket-demo/read-only-demo/test.rkt
+++ b/beautiful-racket-demo/read-only-demo/test.rkt
@@ -1,4 +1,4 @@
 #lang read-only-demo
  
 "hello world"
-(+ 1 (* 2 (- x)))
\ No newline at end of file
+(+ 1 (* 2 (- 3)))
\ No newline at end of file