diff --git a/src/wp-includes/class-wp-customize-control.php b/src/wp-includes/class-wp-customize-control.php
index ae7e3f30b0..b1be94f680 100644
--- a/src/wp-includes/class-wp-customize-control.php
+++ b/src/wp-includes/class-wp-customize-control.php
@@ -814,7 +814,7 @@ class WP_Customize_Media_Control extends WP_Customize_Control {
 									</video>
 								</div>
 							<# } else { #>
-								<img class="attachment-thumb type-icon" src="{{ data.attachment.icon }}" class="icon" draggable="false" />
+								<img class="attachment-thumb type-icon icon" src="{{ data.attachment.icon }}" draggable="false" />
 								<p class="attachment-title">{{ data.attachment.title }}</p>
 							<# } #>
 						</div>
diff --git a/src/wp-includes/media-template.php b/src/wp-includes/media-template.php
index b444310f1f..a8933f36f1 100644
--- a/src/wp-includes/media-template.php
+++ b/src/wp-includes/media-template.php
@@ -298,7 +298,7 @@ function wp_print_media_templates() {
 				<# } else if ( 'image' === data.type && data.sizes && data.sizes.full ) { #>
 					<img class="details-image" src="{{ data.sizes.full.url }}" draggable="false" />
 				<# } else if ( -1 === jQuery.inArray( data.type, [ 'audio', 'video' ] ) ) { #>
-					<img class="details-image" src="{{ data.icon }}" class="icon" draggable="false" />
+					<img class="details-image icon" src="{{ data.icon }}" draggable="false" />
 				<# } #>
 
 				<# if ( 'audio' === data.type ) { #>