diff --git a/README.md b/README.md
index cf91247..63aca60 100644
--- a/README.md
+++ b/README.md
@@ -10,7 +10,7 @@ Much inspiration for this library came from the [Java][javauuid] and
 
 ## Requirements
 
-*Rhumsaa\Uuid works on **64-bit builds** of PHP 5.3.3+.*
+*Rhumsaa\Uuid works on __64-bit builds__ of PHP 5.3.3+.*
 
 This library deals with large integers, so you will need to run it on a
 64-bit system with a 64-bit compiled version of PHP.