diff --git a/system/core/Config.php b/system/core/Config.php
index abd2767..b0b4c9a 100755
--- a/system/core/Config.php
+++ b/system/core/Config.php
@@ -328,7 +328,7 @@
 				$uri = $str;
 			}
 		}
-	    return $uri;
+		return $uri;
 	}
 
 	// --------------------------------------------------------------------
diff --git a/system/core/Hooks.php b/system/core/Hooks.php
index 46bfec0..aa251a3 100755
--- a/system/core/Hooks.php
+++ b/system/core/Hooks.php
@@ -94,7 +94,7 @@
 
 		if (defined('ENVIRONMENT') AND is_file(APPPATH.'config/'.ENVIRONMENT.'/hooks.php'))
 		{
-		    include(APPPATH.'config/'.ENVIRONMENT.'/hooks.php');
+			include(APPPATH.'config/'.ENVIRONMENT.'/hooks.php');
 		}
 		elseif (is_file(APPPATH.'config/hooks.php'))
 		{
diff --git a/system/core/Output.php b/system/core/Output.php
index 7b53f8e..9727a18 100755
--- a/system/core/Output.php
+++ b/system/core/Output.php
@@ -108,7 +108,7 @@
 		// Get mime types for later
 		if (defined('ENVIRONMENT') AND file_exists(APPPATH.'config/'.ENVIRONMENT.'/mimes.php'))
 		{
-		    include APPPATH.'config/'.ENVIRONMENT.'/mimes.php';
+			include APPPATH.'config/'.ENVIRONMENT.'/mimes.php';
 		}
 		else
 		{
diff --git a/system/core/Security.php b/system/core/Security.php
index ce3f7d3..60a64f3 100755
--- a/system/core/Security.php
+++ b/system/core/Security.php
@@ -182,7 +182,7 @@
 
 		// Nothing should last forever
 		unset($_COOKIE[$this->_csrf_cookie_name]);
-                $this->_csrf_hash = '';
+		$this->_csrf_hash = '';
 		$this->_csrf_set_hash();
 		$this->csrf_set_cookie();