diff --git a/wp-content/themes/twentythirteen/content-image.php b/wp-content/themes/twentythirteen/content-image.php
index 54c5224d1a..8e6eca1e27 100644
--- a/wp-content/themes/twentythirteen/content-image.php
+++ b/wp-content/themes/twentythirteen/content-image.php
@@ -10,7 +10,7 @@
 
 <article id="post-<?php the_ID(); ?>" <?php post_class(); ?>>
 	<div class="entry-media">
-		<?php the_image( 'twentythirteen-image-post-format' ); ?>
+		<?php the_image( 'twentythirteen-image-post' ); ?>
 	</div><!-- .entry-media -->
 
 	<header class="entry-header">
diff --git a/wp-content/themes/twentythirteen/functions.php b/wp-content/themes/twentythirteen/functions.php
index 6006bc5277..bea0fac289 100644
--- a/wp-content/themes/twentythirteen/functions.php
+++ b/wp-content/themes/twentythirteen/functions.php
@@ -101,7 +101,7 @@ function twentythirteen_setup() {
 	set_post_thumbnail_size( 604, 270, true );
 
 	// Register custom image size for image post formats.
-	add_image_size( 'twentythirteen-image-post-format', 724, 1288 );
+	add_image_size( 'twentythirteen-image-post', 724, 1288 );
 
 	// This theme uses its own gallery styles.
 	add_filter( 'use_default_gallery_style', '__return_false' );