diff --git a/build/media_source/templates/site/cassiopeia/scss/blocks/_header.scss b/build/media_source/templates/site/cassiopeia/scss/blocks/_header.scss
index 2f2c5fa1757c4..706ae721767ca 100644
--- a/build/media_source/templates/site/cassiopeia/scss/blocks/_header.scss
+++ b/build/media_source/templates/site/cassiopeia/scss/blocks/_header.scss
@@ -20,7 +20,7 @@
     margin-top: $cassiopeia-grid-gutter * .5;
   }
 
-  .site-description {
+  .site-tagline {
     font-size: 1rem;
     color: $white;
     white-space: normal;
diff --git a/templates/cassiopeia/error.php b/templates/cassiopeia/error.php
index 4dbb6e7f93996..5ccc052d14a86 100644
--- a/templates/cassiopeia/error.php
+++ b/templates/cassiopeia/error.php
@@ -125,8 +125,8 @@
                     <a class="brand-logo" href="<?php echo $this->baseurl; ?>/">
                         <?php echo $logo; ?>
                     </a>
-                    <?php if ($this->params->get('siteDescription')) : ?>
-                        <div class="site-description"><?php echo htmlspecialchars($this->params->get('siteDescription')); ?></div>
+                    <?php if ($this->params->get('siteTagline')) : ?>
+                        <div class="site-tagline"><?php echo htmlspecialchars($this->params->get('siteTagline')); ?></div>
                     <?php endif; ?>
                 </div>
             </div>
diff --git a/templates/cassiopeia/index.php b/templates/cassiopeia/index.php
index c1f6c14868417..f0acd9d2a3dd5 100644
--- a/templates/cassiopeia/index.php
+++ b/templates/cassiopeia/index.php
@@ -148,8 +148,8 @@
                     <a class="brand-logo" href="<?php echo $this->baseurl; ?>/">
                         <?php echo $logo; ?>
                     </a>
-                    <?php if ($this->params->get('siteDescription')) : ?>
-                        <div class="site-description"><?php echo htmlspecialchars($this->params->get('siteDescription')); ?></div>
+                    <?php if ($this->params->get('siteTagline')) : ?>
+                        <div class="site-tagline"><?php echo htmlspecialchars($this->params->get('siteTagline')); ?></div>
                     <?php endif; ?>
                 </div>
             </div>
diff --git a/templates/cassiopeia/templateDetails.xml b/templates/cassiopeia/templateDetails.xml
index 1f6a73043d916..47536f3d269ca 100644
--- a/templates/cassiopeia/templateDetails.xml
+++ b/templates/cassiopeia/templateDetails.xml
@@ -78,7 +78,7 @@
 				/>
 
 				<field
-					name="siteDescription"
+					name="siteTagline"
 					type="text"
 					default=""
 					label="TPL_CASSIOPEIA_TAGLINE_LABEL"