diff --git a/beautiful-racket-demo/basic-demo-2/colorer.rkt b/beautiful-racket-demo/basic-demo-2/colorer.rkt
index f2028fc..ae6b600 100644
--- a/beautiful-racket-demo/basic-demo-2/colorer.rkt
+++ b/beautiful-racket-demo/basic-demo-2/colorer.rkt
@@ -24,7 +24,7 @@
          ['REM '(comment #f)]
          ['ERROR '(error #f)]
          [else (match val
-                 [(? number?)'(constant #f)]
+                 [(? number?) '(constant #f)]
                  [(? symbol?) '(symbol #f)]
                  ["(" '(parenthesis |(|)]
                  [")" '(parenthesis |)|)]