diff --git a/modules/system/page.tpl.php b/modules/system/page.tpl.php
index 351cb23..19a53f0 100644
--- a/modules/system/page.tpl.php
+++ b/modules/system/page.tpl.php
@@ -86,7 +86,7 @@
       <?php if ($site_name || $site_slogan): ?>
         <div id="name-and-slogan">
           <?php if ($site_name): ?>
-            <?php if (is_string($title)): ?>
+            <?php if (strlen($title)): ?>
               <div id="site-name"><strong>
                 <a href="<?php print $front_page; ?>" title="<?php print t('Home'); ?>" rel="home"><span><?php print $site_name; ?></span></a>
               </strong></div>
@@ -126,7 +126,7 @@
         <?php if ($page['highlighted']): ?><div id="highlighted"><?php print render($page['highlighted']); ?></div><?php endif; ?>
         <a id="main-content"></a>
         <?php print render($title_prefix); ?>
-        <?php if (is_string($title)): ?><h1 class="title" id="page-title"><?php print $title; ?></h1><?php endif; ?>
+        <?php if (strlen($title)): ?><h1 class="title" id="page-title"><?php print $title; ?></h1><?php endif; ?>
         <?php print render($title_suffix); ?>
         <?php if ($tabs): ?><div class="tabs"><?php print render($tabs); ?></div><?php endif; ?>
         <?php print render($page['help']); ?>
diff --git a/themes/bartik/templates/page.tpl.php b/themes/bartik/templates/page.tpl.php
index c3e5249..b877ff1 100644
--- a/themes/bartik/templates/page.tpl.php
+++ b/themes/bartik/templates/page.tpl.php
@@ -99,7 +99,7 @@
       <div id="name-and-slogan"<?php if ($hide_site_name && $hide_site_slogan) { print ' class="element-invisible"'; } ?>>
 
         <?php if ($site_name): ?>
-          <?php if (is_string($title)): ?>
+          <?php if (strlen($title)): ?>
             <div id="site-name"<?php if ($hide_site_name) { print ' class="element-invisible"'; } ?>>
               <strong>
                 <a href="<?php print $front_page; ?>" title="<?php print t('Home'); ?>" rel="home"><span><?php print $site_name; ?></span></a>
@@ -187,7 +187,7 @@
       <?php if ($page['highlighted']): ?><div id="highlighted"><?php print render($page['highlighted']); ?></div><?php endif; ?>
       <a id="main-content"></a>
       <?php print render($title_prefix); ?>
-      <?php if (is_string($title)): ?>
+      <?php if (strlen($title)): ?>
         <h1 class="title" id="page-title">
           <?php print $title; ?>
         </h1>
diff --git a/themes/garland/page.tpl.php b/themes/garland/page.tpl.php
index aa5d117..c92f479 100644
--- a/themes/garland/page.tpl.php
+++ b/themes/garland/page.tpl.php
@@ -8,7 +8,7 @@
       <div id="header">
         <div id="logo-floater">
         <?php if ($logo || $site_title): ?>
-          <?php if (is_string($title)): ?>
+          <?php if (strlen($title)): ?>
             <div id="branding"><strong><a href="<?php print $front_page ?>">
             <?php if ($logo): ?>
               <img src="<?php print $logo ?>" alt="<?php print $site_name_and_slogan ?>" title="<?php print $site_name_and_slogan ?>" id="logo" />
@@ -42,7 +42,7 @@
           <a id="main-content"></a>
           <?php if ($tabs): ?><div id="tabs-wrapper" class="clearfix"><?php endif; ?>
           <?php print render($title_prefix); ?>
-          <?php if (is_string($title)): ?>
+          <?php if (strlen($title)): ?>
             <h1<?php print $tabs ? ' class="with-tabs"' : '' ?>><?php print $title ?></h1>
           <?php endif; ?>
           <?php print render($title_suffix); ?>
diff --git a/themes/seven/page.tpl.php b/themes/seven/page.tpl.php
index 8e9634d..866fd22 100644
--- a/themes/seven/page.tpl.php
+++ b/themes/seven/page.tpl.php
@@ -2,7 +2,7 @@
   <div id="branding" class="clearfix">
     <?php print $breadcrumb; ?>
     <?php print render($title_prefix); ?>
-    <?php if (is_string($title)): ?>
+    <?php if (strlen($title)): ?>
       <h1 class="page-title"><?php print $title; ?></h1>
     <?php endif; ?>
     <?php print render($title_suffix); ?>