diff --git a/domparser b/domparser
index 712b955..1def116 100644
--- a/domparser
+++ b/domparser
@@ -294,7 +294,7 @@ must run the appropriate steps, depending on <var title="">node</var>'s interfac
   <dt><a href=http://dom.spec.whatwg.org/#comment><code class=external data-anolis-spec=dom>Comment</code></a>
   <dd>
     <ol>
-      <li>Let <var title="">markup</var> the concatenation of
+      <li>Let <var title="">markup</var> be the concatenation of
       "<code title="">&lt;!--</code>", <var title="">node</var>'s
       <a href=http://dom.spec.whatwg.org/#dom-characterdata-data><code class=external data-anolis-spec=dom title=dom-characterdata-data>data</code></a>, and
       "<code title="">--&gt;</code>".
@@ -344,7 +344,7 @@ must run the appropriate steps, depending on <var title="">node</var>'s interfac
   <dt><a href=http://dom.spec.whatwg.org/#documentfragment><code class=external data-anolis-spec=dom>DocumentFragment</code></a>
   <dd>
     <ol>
-      <li>Let <var title="">markup</var> the empty string.
+      <li>Let <var title="">markup</var> be the empty string.
 
       <li>For each
       <a class=external data-anolis-spec=dom href=http://dom.spec.whatwg.org/#concept-tree-child title=concept-tree-child>child</a> of
@@ -878,7 +878,7 @@ method must run these steps:
 
 <ol>
   <li>
-    <p>Let <var title="">node</var> the <a href=#context-object>context object</a>'s
+    <p>Let <var title="">node</var> be the <a href=#context-object>context object</a>'s
     <a class=external data-anolis-spec=dom href=http://dom.spec.whatwg.org/#concept-range-start-node title=concept-range-start-node>start node</a>.
 
     <p>Let <var title="">element</var> be as follows, depending on
diff --git a/source.html b/source.html
index e73a1cf..52630e4 100644
--- a/source.html
+++ b/source.html
@@ -274,7 +274,7 @@ <h3>Serializing</h3>
   <dt><code data-anolis-spec=dom>Comment</code>
   <dd>
     <ol>
-      <li>Let <var title>markup</var> the concatenation of
+      <li>Let <var title>markup</var> be the concatenation of
       "<code title>&lt;!--</code>", <var title>node</var>'s
       <code title=dom-characterdata-data data-anolis-spec=dom>data</code>, and
       "<code title>--></code>".
@@ -324,7 +324,7 @@ <h3>Serializing</h3>
   <dt><code data-anolis-spec=dom>DocumentFragment</code>
   <dd>
     <ol>
-      <li>Let <var title>markup</var> the empty string.
+      <li>Let <var title>markup</var> be the empty string.
 
       <li>For each
       <span title=concept-tree-child data-anolis-spec=dom>child</span> of
@@ -858,7 +858,7 @@ <h2>Extensions to the <code data-anolis-spec=dom>Range</code> interface</h2>
 
 <ol>
   <li>
-    <p>Let <var title>node</var> the <span>context object</span>'s
+    <p>Let <var title>node</var> be the <span>context object</span>'s
     <span data-anolis-spec=dom title=concept-range-start-node>start node</span>.
 
     <p>Let <var title>element</var> be as follows, depending on