diff --git a/carousel.html b/carousel.html
index 598a6334b..dd0c3ca1f 100644
--- a/carousel.html
+++ b/carousel.html
@@ -369,7 +369,7 @@ body {
 
   <div class="featurette">
     <img class="featurette-image pull-right" src="../assets/img/examples/browser-icon-chrome.png">
-    <h2 class="featurette-heading">First featurette headling. <span class="muted">It'll blow your mind.</span></h2>
+    <h2 class="featurette-heading">First featurette headling. <span class="text-muted">It'll blow your mind.</span></h2>
     <p class="lead">Donec ullamcorper nulla non metus auctor fringilla. Vestibulum id ligula porta felis euismod semper. Praesent commodo cursus magna, vel scelerisque nisl consectetur. Fusce dapibus, tellus ac cursus commodo.</p>
   </div>
 
@@ -377,7 +377,7 @@ body {
 
   <div class="featurette">
     <img class="featurette-image pull-left" src="../assets/img/examples/browser-icon-firefox.png">
-    <h2 class="featurette-heading">Oh yeah, it's that good. <span class="muted">See for yourself.</span></h2>
+    <h2 class="featurette-heading">Oh yeah, it's that good. <span class="text-muted">See for yourself.</span></h2>
     <p class="lead">Donec ullamcorper nulla non metus auctor fringilla. Vestibulum id ligula porta felis euismod semper. Praesent commodo cursus magna, vel scelerisque nisl consectetur. Fusce dapibus, tellus ac cursus commodo.</p>
   </div>
 
@@ -385,7 +385,7 @@ body {
 
   <div class="featurette">
     <img class="featurette-image pull-right" src="../assets/img/examples/browser-icon-safari.png">
-    <h2 class="featurette-heading">And lastly, this one. <span class="muted">Checkmate.</span></h2>
+    <h2 class="featurette-heading">And lastly, this one. <span class="text-muted">Checkmate.</span></h2>
     <p class="lead">Donec ullamcorper nulla non metus auctor fringilla. Vestibulum id ligula porta felis euismod semper. Praesent commodo cursus magna, vel scelerisque nisl consectetur. Fusce dapibus, tellus ac cursus commodo.</p>
   </div>
 
diff --git a/jumbotron-narrow.html b/jumbotron-narrow.html
index abf07dc72..84a918064 100644
--- a/jumbotron-narrow.html
+++ b/jumbotron-narrow.html
@@ -94,7 +94,7 @@ title: Narrow page template
       <li><a href="#">About</a></li>
       <li><a href="#">Contact</a></li>
     </ul>
-    <h3 class="muted">Project name</h3>
+    <h3 class="text-muted">Project name</h3>
   </div>
 
   <div class="jumbotron">
diff --git a/justified-nav.html b/justified-nav.html
index 7013b150e..f136ee92a 100644
--- a/justified-nav.html
+++ b/justified-nav.html
@@ -96,7 +96,7 @@ title: Justified nav template
 <div class="container">
 
   <div class="masthead">
-    <h3 class="muted">Project name</h3>
+    <h3 class="text-muted">Project name</h3>
     <ul class="nav nav-justified">
       <li class="active"><a href="#">Home</a></li>
       <li><a href="#">Projects</a></li>
diff --git a/sticky-footer-navbar.html b/sticky-footer-navbar.html
index b00bfd5ab..9187b7882 100644
--- a/sticky-footer-navbar.html
+++ b/sticky-footer-navbar.html
@@ -112,6 +112,6 @@ title: Sticky footer with navbar template
 
 <div id="footer">
   <div class="container">
-    <p class="muted credit">Example courtesy <a href="http://martinbean.co.uk">Martin Bean</a> and <a href="http://ryanfait.com/sticky-footer/">Ryan Fait</a>.</p>
+    <p class="text-muted credit">Example courtesy <a href="http://martinbean.co.uk">Martin Bean</a> and <a href="http://ryanfait.com/sticky-footer/">Ryan Fait</a>.</p>
   </div>
 </div>
diff --git a/sticky-footer.html b/sticky-footer.html
index 722d3aa19..6ddd5a1dc 100644
--- a/sticky-footer.html
+++ b/sticky-footer.html
@@ -76,6 +76,6 @@ title: Sticky footer template
 
 <div id="footer">
   <div class="container">
-    <p class="muted credit">Example courtesy <a href="http://martinbean.co.uk">Martin Bean</a> and <a href="http://ryanfait.com/sticky-footer/">Ryan Fait</a>.</p>
+    <p class="text-muted credit">Example courtesy <a href="http://martinbean.co.uk">Martin Bean</a> and <a href="http://ryanfait.com/sticky-footer/">Ryan Fait</a>.</p>
   </div>
 </div>