diff --git a/index.html b/index.html
index 3ba293ffe..1cf3c4151 100644
--- a/index.html
+++ b/index.html
@@ -1111,7 +1111,9 @@ compiled({epithet: "stooge"});
         If ERB-style delimiters aren't your cup of tea, you can change Underscore's
         template settings to use different symbols to set off interpolated code.
         Define an <b>interpolate</b> regex, and an (optional) <b>evaluate</b> regex
-        to match expressions that should be inserted and evaluated, respectively. 
+        to match expressions that should be inserted and evaluated, respectively.
+        If no <b>evaluate</b> regex is provided, your templates will only be 
+        capable of interpolating values. 
         For example, to perform
         <a href="http://github.com/janl/mustache.js#readme">Mustache.js</a>
         style templating: