diff --git a/coverage/carto_fuel.html b/coverage/carto_fuel.html
index 0ba775d..d4de440 100644
--- a/coverage/carto_fuel.html
+++ b/coverage/carto_fuel.html
@@ -13,7 +13,7 @@
     }
   };
 
-  req.open("GET", "coverage.fuel.json");
+  req.open("GET", "./coverage.fuel.json");
   req.send(null);					    // 実際にサーバーへリクエストを送信
 }
  </script>