diff --git a/src/Core/Cache/MemcachedCacheDriver.php b/src/Core/Cache/MemcachedCacheDriver.php
index d6b8d4ad58..78a4a6bdfe 100644
--- a/src/Core/Cache/MemcachedCacheDriver.php
+++ b/src/Core/Cache/MemcachedCacheDriver.php
@@ -50,7 +50,7 @@ class MemcachedCacheDriver extends BaseObject implements ICacheDriver
 	{
 		// We store with the hostname as key to avoid problems with other applications
 		return $this->memcached->set(
-			self::getApp()->get_hostname() . ":" . $key,
+			self::getApp()->get_hostname() . ':' . $key,
 			$value,
 			time() + $duration
 		);
@@ -58,7 +58,9 @@ class MemcachedCacheDriver extends BaseObject implements ICacheDriver
 
 	public function delete($key)
 	{
-		return $this->memcached->delete($key);
+		$return = $this->memcached->delete(self::getApp()->get_hostname() . ':' . $key);
+
+		return $return;
 	}
 
 	public function clear()
diff --git a/src/Core/Session/CacheSessionHandler.php b/src/Core/Session/CacheSessionHandler.php
index 463fd33d3e..507735c4fc 100644
--- a/src/Core/Session/CacheSessionHandler.php
+++ b/src/Core/Session/CacheSessionHandler.php
@@ -24,7 +24,7 @@ class CacheSessionHandler extends BaseObject implements SessionHandlerInterface
 
 	public function read($session_id)
 	{
-		if (!x($session_id)) {
+		if (empty($session_id)) {
 			return '';
 		}
 
@@ -58,9 +58,9 @@ class CacheSessionHandler extends BaseObject implements SessionHandlerInterface
 			return true;
 		}
 
-		Cache::set('session:' . $session_id, $session_data, Session::$expire);
+		$return = Cache::set('session:' . $session_id, $session_data, Session::$expire);
 
-		return true;
+		return $return;
 	}
 
 	public function close()
@@ -70,8 +70,9 @@ class CacheSessionHandler extends BaseObject implements SessionHandlerInterface
 
 	public function destroy($id)
 	{
-		Cache::delete('session:' . $id);
-		return true;
+		$return = Cache::delete('session:' . $id);
+
+		return $return;
 	}
 
 	public function gc($maxlifetime)