2 files changed, 4 insertions, 6 deletions
diff --git a/system/libraries/Cache/drivers/Cache_redis.php b/system/libraries/Cache/drivers/Cache_redis.php
index f2a41cc67..5236556d9 100644
--- a/system/libraries/Cache/drivers/Cache_redis.php
+++ b/system/libraries/Cache/drivers/Cache_redis.php
@@ -243,15 +243,13 @@ class CI_Cache_redis extends CI_Driver
 	 */
 	public function is_supported()
 	{
-		if (extension_loaded('redis'))
-		{
-			return $this->_setup_redis();
-		}
-		else
+		if ( ! extension_loaded('redis'))
 		{
 			log_message('debug', 'The Redis extension must be loaded to use Redis cache.');
 			return FALSE;
 		}
+
+		return $this->_setup_redis();
 	}
 
 	// ------------------------------------------------------------------------
diff --git a/system/libraries/Cache/drivers/Cache_wincache.php b/system/libraries/Cache/drivers/Cache_wincache.php
index 528b2b9bf..9cc6ff016 100644
--- a/system/libraries/Cache/drivers/Cache_wincache.php
+++ b/system/libraries/Cache/drivers/Cache_wincache.php
@@ -194,7 +194,7 @@ class CI_Cache_wincache extends CI_Driver {
 	 */
 	public function is_supported()
 	{
-		if ( ! extension_loaded('wincache'))
+		if ( ! extension_loaded('wincache') OR ! ini_get('wincache.ucenabled'))
 		{
 			log_message('debug', 'The Wincache PHP extension must be loaded to use Wincache Cache.');
 			return FALSE;