diff --git a/README.md b/README.md
index a77a29e..64f1cce 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,6 @@
 # CircularList
-This is a ultra fast Single Header Circular List or Circular Buffer for use in Embedded Linux or Micro
+This is an ultra fast Single Header Circular List or Circular Buffer for use in Embedded Linux or Micro
+be carefull that only use power 2 of buffer for example your list buffer should be 1,2,4,16,32,.... length
 
 ## Notice
 use power two for size of your list