Minor fixes

2 files changed, 2 insertions, 2 deletions

diff --git a/system/core/Exceptions.php b/system/core/Exceptions.php
index 5bcb7c1c5..cb4bc3cd6 100644
--- a/system/core/Exceptions.php
+++ b/system/core/Exceptions.php
@@ -45,7 +45,7 @@ class CI_Exceptions {
 	public $ob_level;
 
 	/**
-	 * List if available error levels
+	 * List of available error levels
 	 *
 	 * @var	array
 	 */
diff --git a/system/core/Output.php b/system/core/Output.php
index df9ef0778..238d223e2 100644
--- a/system/core/Output.php
+++ b/system/core/Output.php
@@ -243,7 +243,7 @@ class CI_Output {
 		}
 
 		$header = 'Content-Type: '.$mime_type
-			.(empty($charset) ? NULL : '; charset='.$charset);
+			.(empty($charset) ? '' : '; charset='.$charset);
 
 		$this->headers[] = array($header, TRUE);
 		return $this;