diff --git a/examples/reading-files/reading-files.go b/examples/reading-files/reading-files.go
index 5a930a3..807195f 100644
--- a/examples/reading-files/reading-files.go
+++ b/examples/reading-files/reading-files.go
@@ -33,7 +33,7 @@ func main() {
     // by `Open`ing a file to obtain an `os.File` value.
     f, err := os.Open("/tmp/dat")
     check(err)
-    
+
     // Read some bytes from the beginning of the file.
     // Allow up to 5 to be read but also note how many
     // actually were read.
diff --git a/examples/reading-files/reading-files.hash b/examples/reading-files/reading-files.hash
index d39e052..c56535c 100644
--- a/examples/reading-files/reading-files.hash
+++ b/examples/reading-files/reading-files.hash
@@ -1,2 +1,2 @@
-251ab050de24051bb7d9858940421fdec41fa674
-VcLqpSwnkN
+2aa7a2e248065cebfa6f8eece3234b5ffa710273
+2kEKXq-kUV
diff --git a/public/reading-files b/public/reading-files
index a40b69e..868299e 100644
--- a/public/reading-files
+++ b/public/reading-files
@@ -41,7 +41,7 @@ reading files.</p>
             
           </td>
           <td class="code leading">
-	        <a href="http://play.golang.org/p/VcLqpSwnkN"><img title="Run code" src="play.png" class="run" /></a>
+	        <a href="http://play.golang.org/p/2kEKXq-kUV"><img title="Run code" src="play.png" class="run" /></a>
             <div class="highlight"><pre><span class="kn">package</span> <span class="nx">main</span>
 </pre></div>
 
@@ -122,6 +122,7 @@ by <code>Open</code>ing a file to obtain an <code>os.File</code> value.</p>
           <td class="code leading">
 	        
             <div class="highlight"><pre>    <span class="nx">f</span><span class="p">,</span> <span class="nx">err</span> <span class="o">:=</span> <span class="nx">os</span><span class="p">.</span><span class="nx">Open</span><span class="p">(</span><span class="s">&quot;/tmp/dat&quot;</span><span class="p">)</span>
+    <span class="nx">check</span><span class="p">(</span><span class="nx">err</span><span class="p">)</span>
 </pre></div>
 
           </td>