diff --git a/src/wp-includes/comment-template.php b/src/wp-includes/comment-template.php
index d0bdba5024..918238f7fa 100644
--- a/src/wp-includes/comment-template.php
+++ b/src/wp-includes/comment-template.php
@@ -1516,14 +1516,11 @@ function comments_template( $file = '/comments.php', $separate_comments = false
  *
  * @since 0.71
  *
- * @param string $zero      Optional. String to display when no comments. Default false.
- * @param string $one       Optional. String to display when only one comment is available.
- *                          Default false.
- * @param string $more      Optional. String to display when there are more than one comment.
- *                          Default false.
- * @param string $css_class Optional. CSS class to use for comments. Default empty.
- * @param string $none      Optional. String to display when comments have been turned off.
- *                          Default false.
+ * @param false|string $zero      Optional. String to display when no comments. Default false.
+ * @param false|string $one       Optional. String to display when only one comment is available. Default false.
+ * @param false|string $more      Optional. String to display when there are more than one comment. Default false.
+ * @param string       $css_class Optional. CSS class to use for comments. Default empty.
+ * @param false|string $none      Optional. String to display when comments have been turned off. Default false.
  */
 function comments_popup_link( $zero = false, $one = false, $more = false, $css_class = '', $none = false ) {
 	$id     = get_the_ID();