diff --git a/system/libraries/Cache/drivers/Cache_apc.php b/system/libraries/Cache/drivers/Cache_apc.php
index d062103..de849c7 100644
--- a/system/libraries/Cache/drivers/Cache_apc.php
+++ b/system/libraries/Cache/drivers/Cache_apc.php
@@ -187,7 +187,7 @@
 	 */
 	public function is_supported()
 	{
-		if ( ! extension_loaded('apc') OR ! (bool) @ini_get('apc.enabled'))
+		if ( ! extension_loaded('apc') OR ! ini_get('apc.enabled'))
 		{
 			log_message('debug', 'The APC PHP extension must be loaded to use APC Cache.');
 			return FALSE;
diff --git a/system/libraries/Email.php b/system/libraries/Email.php
index 93c19de..3c3c49e 100644
--- a/system/libraries/Email.php
+++ b/system/libraries/Email.php
@@ -401,7 +401,7 @@
 			$this->_smtp_auth = ! ($this->smtp_user === '' && $this->smtp_pass === '');
 		}
 
-		$this->_safe_mode = ( ! is_php('5.4') && (bool) @ini_get('safe_mode'));
+		$this->_safe_mode = ( ! is_php('5.4') && ini_get('safe_mode'));
 		$this->charset = strtoupper($this->charset);
 
 		log_message('debug', 'Email Class Initialized');
diff --git a/system/libraries/Upload.php b/system/libraries/Upload.php
index 983d832..4939b15 100644
--- a/system/libraries/Upload.php
+++ b/system/libraries/Upload.php
@@ -1255,7 +1255,7 @@
 				}
 			}
 
-			if ((bool) @ini_get('safe_mode') === FALSE && function_usable('shell_exec'))
+			if ( ! ini_get('safe_mode') && function_usable('shell_exec'))
 			{
 				$mime = @shell_exec($cmd);
 				if (strlen($mime) > 0)