diff --git a/snippets/postfixToInfix.md b/snippets/postfixToInfix.md
index 6736859e6..7d4328ff9 100644
--- a/snippets/postfixToInfix.md
+++ b/snippets/postfixToInfix.md
@@ -1,5 +1,6 @@
 ### postfixToInfix
 
+(WARNING) :- Does not handles `unary` operator well.
 
 ``` js
 const postfixToInfix = RPN => {