diff --git a/README.md b/README.md
index 1b0b9d7..0216d38 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,7 @@
 # php FFI Extend
-Call PHP C API 
-Note: On windows, can be define constant `PHP_DLL_FILE_PATH` for specify `php7.dll` or `php7ts.dll` path
+Call PHP C API
+
+__Note: On windows, can be define constant `PHP_DLL_FILE_PATH` for specify `php7.dll` or `php7ts.dll` path__
 # Reference
 
 ### class `Toknot\FFIExtend` of methods