diff --git a/System/Cache/Base/Redis.php b/System/Cache/Base/Redis.php
index 8088ceb2..750d27d2 100644
--- a/System/Cache/Base/Redis.php
+++ b/System/Cache/Base/Redis.php
@@ -92,7 +92,7 @@ class Redis implements StopHeartbeatCheck
 	 */
 	public function stopHeartbeatCheck(): void
 	{
-		if (Context::inCoroutine()) {
+		if ($this->_timer > -1) {
 			Timer::clear($this->_timer);
 		}
 		$this->_timer = -1;