--- a/spec/Overview-WebCryptoAPI.xml	Thu Sep 25 10:59:01 2014 -0700
+++ b/spec/Overview-WebCryptoAPI.xml	Thu Sep 25 11:00:42 2014 -0700
@@ -16622,7 +16622,8 @@
                 <li>
                   <p>
                     If <var>usages</var> contains a value that is not
-                    <code>"deriveKey"</code>, then <a href="#concept-return-an-error">return an
+                    <code>"deriveKey"</code> or <code>"deriveBits"</code>, then
+                    <a href="#concept-return-an-error">return an
                     error</a> named <a href="#dfn-SyntaxError"><code>SyntaxError</code></a>.
                   </p>
                 </li>
@@ -16701,7 +16702,8 @@
                 <li>
                   <p>
                     If <var>usages</var> contains a value that is not
-                    <code>"deriveKey"</code>, then <a href="#concept-return-an-error">return an
+                    <code>"deriveKey"</code>  or <code>"deriveBits"</code>, then
+                    <a href="#concept-return-an-error">return an
                     error</a> named <a href="#dfn-SyntaxError"><code>SyntaxError</code></a>.
                   </p>
                 </li>

--- a/spec/Overview.html	Thu Sep 25 10:59:01 2014 -0700
+++ b/spec/Overview.html	Thu Sep 25 11:00:42 2014 -0700
@@ -16058,7 +16058,8 @@
                 <li>
                   <p>
                     If <var>usages</var> contains a value that is not
-                    <code>"deriveKey"</code>, then <a href="#concept-return-an-error">return an
+                    <code>"deriveKey"</code> or <code>"deriveBits"</code>, then
+                    <a href="#concept-return-an-error">return an
                     error</a> named <a href="#dfn-SyntaxError"><code>SyntaxError</code></a>.
                   </p>
                 </li>
@@ -16133,7 +16134,8 @@
                 <li>
                   <p>
                     If <var>usages</var> contains a value that is not
-                    <code>"deriveKey"</code>, then <a href="#concept-return-an-error">return an
+                    <code>"deriveKey"</code>  or <code>"deriveBits"</code>, then
+                    <a href="#concept-return-an-error">return an
                     error</a> named <a href="#dfn-SyntaxError"><code>SyntaxError</code></a>.
                   </p>
                 </li>