diff --git a/object-cache.php b/object-cache.php
index 4f8d7fd85822ca480bf953dd0ee55c2b4746f16b..b9b48d425776c00f2e7d728c4df3a7c2f219d60c 100644
--- a/object-cache.php
+++ b/object-cache.php
@@ -416,7 +416,7 @@ class WP_Object_Cache {
 		}
 
 		$this->cache = array();
-		$result = $this->parse_predis_response( $this->redis->flushall() );
+		$result = $this->parse_predis_response( $this->redis->flushdb() );
 
 		return $result;
 	}