diff --git a/classes/query_builder.php b/classes/query_builder.php
index 0ee79a1..39c21c5 100644
--- a/classes/query_builder.php
+++ b/classes/query_builder.php
@@ -1082,12 +1082,8 @@ class Query_Builder {
 		$this->_reset();
 		
 		$rows = $result->fetchAll();
-		$count = count($rows);
 		
-		// Unset rows to save memory
-		$rows = NULL;
-		
-		return (int) $count;
+		return (int) count($rows);
 	}
 	
 	// --------------------------------------------------------------------------