diff --git a/index.php b/index.php
index b794087..a62d7d6 100644
--- a/index.php
+++ b/index.php
@@ -76,6 +76,7 @@ function get_stats(){
     if ($row = $res->fetch_assoc()) {
         $ret["match"] = $row["c"];
     }
+    $ret["unmatched"] = $ret["found"] + $ret["lost"] - 2 * $ret["match"];
     return $ret;
 }