diff --git a/system/helpers/url_helper.php b/system/helpers/url_helper.php
index 2bd41b0..58bde17 100644
--- a/system/helpers/url_helper.php
+++ b/system/helpers/url_helper.php
@@ -204,7 +204,7 @@
 
 		if ( ! is_array($attributes))
 		{
-			$attributes = array();
+			$attributes = array($attributes);
 		}
 
 		foreach (array('width' => '800', 'height' => '600', 'scrollbars' => 'yes', 'status' => 'yes', 'resizable' => 'yes', 'screenx' => '0', 'screeny' => '0', ) as $key => $val)
@@ -213,10 +213,7 @@
 			unset($attributes[$key]);
 		}
 
-		if ($attributes !== '')
-		{
-			$attributes = _parse_attributes($attributes);
-		}
+		$attributes = empty($attributes) ? '' : _parse_attributes($attributes);
 
 		return '<a href="javascript:void(0);" onclick="window.open(\''.$site_url."', '_blank', '"._parse_attributes($atts, TRUE)."');\"".$attributes.'>'.$title.'</a>';
 	}
diff --git a/user_guide_src/source/changelog.rst b/user_guide_src/source/changelog.rst
index 9ef0ce9..542c473 100644
--- a/user_guide_src/source/changelog.rst
+++ b/user_guide_src/source/changelog.rst
@@ -279,6 +279,7 @@
 -  Fixed a bug (#318) - :doc:`Profiling <general/profiling>` setting *query_toggle_count* was not settable as described in the manual.
 -  Fixed a bug (#938) - :doc:`Config Library <libraries/config>` method site_url() added a question mark to the URL string when query strings are enabled even if it already existed.
 -  Fixed a bug (#999) - :doc:`Config Library <libraries/config>` method site_url() always appended ``$config['url_suffix']`` to the end of the URL string, regardless of wether a query string exists in it.
+-  Fixed a bug where :doc:`URL Helper <helpers/url_helper>` function anchor_popup() ignored the attributes argument if it is not an array.
 
 Version 2.1.1
 =============