diff --git a/README.md b/README.md
index 5455283..31bbb5d 100644
--- a/README.md
+++ b/README.md
@@ -11,7 +11,7 @@ varying barcode heights, and one of four barcode formats. It does require
 the GD Library to be installed as a module in PHP.
 
 Usage:
-<img alt="testing" src="barcode.php?text=testing" />
+`<img alt="testing" src="barcode.php?text=testing" />`
 
 Result:
 <img alt="testing" src="http://davidscotttufts.com/code/barcode.php?text=testing" />