diff --git a/wp-admin/themes.php b/wp-admin/themes.php
index aca5be72b1..0f44510542 100644
--- a/wp-admin/themes.php
+++ b/wp-admin/themes.php
@@ -153,7 +153,7 @@ if ( ! $ct->errors() || ( 1 == count( $ct->errors()->get_error_codes() )
 	if ( is_array( $submenu ) && isset( $submenu['themes.php'] ) ) {
 		foreach ( (array) $submenu['themes.php'] as $item) {
 			$class = '';
-			if ( 'themes.php' == $item[2] || 'theme-editor.php' == $item[2] || 'customize.php' == $item[2] )
+			if ( 'themes.php' == $item[2] || 'theme-editor.php' == $item[2] || 0 === strpos( $item[2], 'customize.php' ) )
 				continue;
 			// 0 = name, 1 = capability, 2 = file
 			if ( ( strcmp($self, $item[2]) == 0 && empty($parent_file)) || ($parent_file && ($item[2] == $parent_file)) )