diff --git a/system/helpers/string_helper.php b/system/helpers/string_helper.php
index 4eee2a2..c5c4934 100644
--- a/system/helpers/string_helper.php
+++ b/system/helpers/string_helper.php
@@ -276,8 +276,11 @@
 	/**
 	 * Repeater function
 	 *
-	 * @param	string
-	 * @param	int	number of repeats
+	 * @todo	Remove in version 3.1+.
+	 * @deprecated	3.0.0	This is just an alias for PHP's native str_repeat()
+	 *
+	 * @param	string	$data	String to repeat
+	 * @param	int	$num	Number of repeats
 	 * @return	string
 	 */
 	function repeater($data, $num = 1)
diff --git a/user_guide_src/source/changelog.rst b/user_guide_src/source/changelog.rst
index c373459..e91fafc 100644
--- a/user_guide_src/source/changelog.rst
+++ b/user_guide_src/source/changelog.rst
@@ -85,6 +85,7 @@
 	 - Added an optional paramater to ``delete_files()`` to enable it to skip deleting files such as .htaccess and index.html.
 	 - ``read_file()`` is now a deprecated alias of ``file_get_contents()``.
    -  :doc:`Security Helper <helpers/security_helper>` function ``strip_image_tags()`` is now an alias for the same method in the :doc:`Security Library <libraries/security>`.
+   -  Deprecated :doc:`String Helper <helpers/string_helper>` function ``repeater()`` - it's just an alias for PHP's native ``str_repeat()``.
 
 -  Database
 
diff --git a/user_guide_src/source/helpers/string_helper.rst b/user_guide_src/source/helpers/string_helper.rst
index 19500aa..530af2f 100644
--- a/user_guide_src/source/helpers/string_helper.rst
+++ b/user_guide_src/source/helpers/string_helper.rst
@@ -96,6 +96,9 @@
 
 The above would generate 30 newlines.
 
+.. note:: This function is DEPRECATED. Use the native ``str_repeat()``
+	instead.
+
 reduce_double_slashes()
 =======================
 
diff --git a/user_guide_src/source/installation/upgrade_300.rst b/user_guide_src/source/installation/upgrade_300.rst
index 9521083..dcdd6e3 100644
--- a/user_guide_src/source/installation/upgrade_300.rst
+++ b/user_guide_src/source/installation/upgrade_300.rst
@@ -134,6 +134,16 @@
 .. note:: This function is still available, but you're strongly encouraged to remove it's usage sooner
 	rather than later.
 
+String helper repeater()
+========================
+
+:doc:`String Helper <../helpers/string_helper>` function ``repeater()`` is now just an alias for
+PHP's native ``str_repeat()`` function. It is deprecated and scheduled for removal in
+CodeIgniter 3.1+.
+
+.. note:: This function is still available, but you're strongly encouraged to remove it's usage sooner
+	rather than later.
+
 Form helper form_prep()
 =======================