diff --git a/System/Pool/Connection.php b/System/Pool/Connection.php
index ff526e93..4a5817ee 100644
--- a/System/Pool/Connection.php
+++ b/System/Pool/Connection.php
@@ -149,8 +149,8 @@ class Connection extends Pool
 		if (!isset($this->hasCreate[$coroutineName])) {
 			$this->hasCreate[$coroutineName] = 0;
 		}
-		if (Context::hasContext($coroutineName)) {
-			return Context::getContext($coroutineName);
+		if (($pdo = Context::getContext($coroutineName)) instanceof PDO) {
+			return $pdo;
 		}
 		if (!$this->hasItem($coroutineName)) {
 			$this->newClient($config, $coroutineName);
diff --git a/System/Pool/Redis.php b/System/Pool/Redis.php
index 4f5529db..9941716c 100644
--- a/System/Pool/Redis.php
+++ b/System/Pool/Redis.php
@@ -44,8 +44,8 @@ class Redis extends Pool
 	{
 		$name = $config['host'] . ':' . $config['prefix'] . ':' . $config['databases'];
 		$coroutineName = $this->name('redis:' . $name, $isMaster);
-		if (Context::hasContext($coroutineName)) {
-			return Context::getContext($coroutineName);
+		if (($redis = Context::getContext($coroutineName)) instanceof \Redis) {
+			return $redis;
 		}
 		if (!$this->hasItem($coroutineName)) {
 			$this->newClient($config, $coroutineName);