diff --git a/inc/Data/Driver/RedisCacheDriver.php b/inc/Data/Driver/RedisCacheDriver.php
index 46e602d4..8f3e3dc8 100644
--- a/inc/Data/Driver/RedisCacheDriver.php
+++ b/inc/Data/Driver/RedisCacheDriver.php
@@ -33,8 +33,7 @@ class RedisCacheDriver implements CacheDriver {
 		if ($expires === false) {
 			$this->inner->set($this->prefix . $key, \json_encode($value));
 		} else {
-			$expires = $expires * 1000; // Seconds to milliseconds.
-			$this->inner->setex($this->prefix . $key, $expires, \json_encode($value));
+			$this->inner->setEx($this->prefix . $key, $expires, \json_encode($value));
 		}
 	}