diff --git a/README.md b/README.md
index 1842049a5..a243d8187 100644
--- a/README.md
+++ b/README.md
@@ -234,11 +234,13 @@ var worksheet = workbook.getWorksheet(1);
 
 ## Worksheet State
 
+```javascript
 // make worksheet visible
 worksheet.state = 'show';
 
 // make worksheet hidden
 worksheet.state = 'hidden';
+```
 
 ## Worksheet Properties