diff --git a/src/ResultSet.php b/src/ResultSet.php
index 05117a5..d4a1123 100644
--- a/src/ResultSet.php
+++ b/src/ResultSet.php
@@ -125,9 +125,6 @@ protected function advance()
 
         if (! $this->isCacheDisabled) {
             $this->cache[$this->generator->key()] = $this->generator->current();
-
-            // Only required on PHP 5.6, 7+ does it automatically
-            $this->cache->seek($this->generator->key());
         }
 
         if ($this->position === null) {