diff --git a/wp-admin/custom-background.php b/wp-admin/custom-background.php
index f6869c952c..eaa08ed019 100644
--- a/wp-admin/custom-background.php
+++ b/wp-admin/custom-background.php
@@ -260,7 +260,7 @@ if ( get_background_image() ) {
 		<input type="file" id="upload" name="import" />
 		<input type="hidden" name="action" value="save" />
 		<?php wp_nonce_field( 'custom-background-upload', '_wpnonce-custom-background-upload' ); ?>
-		<?php submit_button( __( 'Upload' ), 'small', 'submit', false ); ?>
+		<?php submit_button( __( 'Upload' ), 'button', 'submit', false ); ?>
 	</p>
 	<?php
 		$image_library_url = get_upload_iframe_src( 'image', null, 'library' );
diff --git a/wp-admin/custom-header.php b/wp-admin/custom-header.php
index 7a570e3403..cac583f352 100644
--- a/wp-admin/custom-header.php
+++ b/wp-admin/custom-header.php
@@ -531,7 +531,7 @@ class Custom_Image_Header {
 		<input type="file" id="upload" name="import" />
 		<input type="hidden" name="action" value="save" />
 		<?php wp_nonce_field( 'custom-header-upload', '_wpnonce-custom-header-upload' ); ?>
-		<?php submit_button( __( 'Upload' ), 'small', 'submit', false ); ?>
+		<?php submit_button( __( 'Upload' ), 'button', 'submit', false ); ?>
 	</p>
 	<?php
 		$image_library_url = get_upload_iframe_src( 'image', null, 'library' );