diff --git a/system/helpers/captcha_helper.php b/system/helpers/captcha_helper.php
index 57ef9e2..3aac14d 100644
--- a/system/helpers/captcha_helper.php
+++ b/system/helpers/captcha_helper.php
@@ -80,7 +80,7 @@
 		$current_dir = @opendir($img_path);
 		while ($filename = @readdir($current_dir))
 		{
-			if (strpos($filename, ".jpg") !== FALSE && (str_replace('.jpg', '', $filename) + $expiration) < $now)
+			if (substr($filename, -4) === '.jpg' && (str_replace('.jpg', '', $filename) + $expiration) < $now)
 			{
 				@unlink($img_path.$filename);
 			}
diff --git a/system/libraries/Session/drivers/Session_cookie.php b/system/libraries/Session/drivers/Session_cookie.php
index 6d931c1..4f415cc 100755
--- a/system/libraries/Session/drivers/Session_cookie.php
+++ b/system/libraries/Session/drivers/Session_cookie.php
@@ -347,7 +347,7 @@
 		else
 		{
 			// Just force an update to recreate the id
-			$this->_sess_update(true);
+			$this->_sess_update(TRUE);
 		}
 	}
 
diff --git a/system/libraries/Xmlrpc.php b/system/libraries/Xmlrpc.php
index cbb91c4..a8aaa20 100644
--- a/system/libraries/Xmlrpc.php
+++ b/system/libraries/Xmlrpc.php
@@ -1359,7 +1359,7 @@
 
 		if ($type === $this->xmlrpcBoolean)
 		{
-			$val = (int) (strcasecmp($val,'true') === 0 OR $val === 1 OR ($val === TRUE && strcasecmp($val, 'false')));
+			$val = (int) (strcasecmp($val, 'true') === 0 OR $val === 1 OR ($val === TRUE && strcasecmp($val, 'false')));
 		}
 
 		if ($this->mytype === 2)