diff --git a/README.markdown b/README.markdown
index f655afe..a5d43f8 100644
--- a/README.markdown
+++ b/README.markdown
@@ -280,8 +280,8 @@ Example:
 
     (macrolet ((square (a)
                  (if (numberp a)
-		     (* a a)
-		     `(* ,a ,a))))
+                     (* a a)
+                     `(* ,a ,a))))
       (return (square 2)))
 
 Compiled: