diff --git a/object-cache.php b/object-cache.php
index 7571d96f2121dc810c8af11e192d808cda8ef155..d290a493e221557b9921e6698ff20963d1c891dd 100644
--- a/object-cache.php
+++ b/object-cache.php
@@ -855,7 +855,7 @@ class WP_Object_Cache {
 		// Save to Redis
 		$expiration = absint( $expiration );
 		if ( $expiration ) {
-			$result = $this->redis->setex( $derived_key, $this->prepare_value_for_redis( $value ), $expiration );
+			$result = $this->redis->setex( $derived_key, $expiration, $this->prepare_value_for_redis( $value ) );
 		} else {
 			$result = $this->redis->set( $derived_key, $this->prepare_value_for_redis( $value ) );
 		}
@@ -982,7 +982,7 @@ class WP_Object_Cache {
 		// Save to Redis
 		$expiration = absint( $expiration );
 		if ( $expiration ) {
-			$result = $this->redis->setex( $derived_key, $this->prepare_value_for_redis( $value ), $expiration );
+			$result = $this->redis->setex( $derived_key, $expiration, $this->prepare_value_for_redis( $value ) );
 		} else {
 			$result = $this->redis->set( $derived_key, $this->prepare_value_for_redis( $value ) );
 		}