diff --git a/README.md b/README.md
index 8172e7161..7118dee4e 100644
--- a/README.md
+++ b/README.md
@@ -36,7 +36,7 @@ Make sure to include the CSS and font files, but there is no need to include the
 These APIs default to inline math typesetting; for display math you can prepend `\displaystyle` ([#66](https://github.com/Khan/KaTeX/issues/66)):
 
 ```js
-katex.render("\\displaystyle " + formula, element);
+katex.render("\\displaystyle {" + formula + "}, element);
 // OR
 var html = katex.renderToString("\\displaystyle " + formula);
 ```