diff --git a/src/wp-includes/class-walker-comment.php b/src/wp-includes/class-walker-comment.php
index e0150b34fe..a15ccc830a 100644
--- a/src/wp-includes/class-walker-comment.php
+++ b/src/wp-includes/class-walker-comment.php
@@ -1,6 +1,6 @@
 <?php
 /**
- * Comments API: Walker_Comment class
+ * Comment API: Walker_Comment class
  *
  * @package WordPress
  * @subpackage Comments
diff --git a/src/wp-includes/class-wp-comment-query.php b/src/wp-includes/class-wp-comment-query.php
index 0b2ce72b82..c86cfd2726 100644
--- a/src/wp-includes/class-wp-comment-query.php
+++ b/src/wp-includes/class-wp-comment-query.php
@@ -1,6 +1,6 @@
 <?php
 /**
- * Comments API: WP_Comment_Query class
+ * Comment API: WP_Comment_Query class
  *
  * @package WordPress
  * @subpackage Comment
diff --git a/src/wp-includes/class-wp-comment.php b/src/wp-includes/class-wp-comment.php
index 753ab39dbd..581fca2db2 100644
--- a/src/wp-includes/class-wp-comment.php
+++ b/src/wp-includes/class-wp-comment.php
@@ -1,6 +1,6 @@
 <?php
 /**
- * Comments API: WP_Comment object class
+ * Comment API: WP_Comment object class
  *
  * @package WordPress
  * @subpackage Comments
diff --git a/src/wp-includes/comment-functions.php b/src/wp-includes/comment-functions.php
index 70a1bfd677..db58fede5c 100644
--- a/src/wp-includes/comment-functions.php
+++ b/src/wp-includes/comment-functions.php
@@ -1,6 +1,6 @@
 <?php
 /**
- * Comments API: Top-level comments functionality
+ * Comment API: Top-level comments functionality
  *
  * @package WordPress
  * @subpackage Comment