diff --git a/_modules/transport_performance/gtfs/validation.html b/_modules/transport_performance/gtfs/validation.html
index 4311915d..53f612d3 100644
--- a/_modules/transport_performance/gtfs/validation.html
+++ b/_modules/transport_performance/gtfs/validation.html
@@ -1166,7 +1166,9 @@ Source code for transport_performance.gtfs.validation
</head>
<body>
<h1 style="font-family: 'Poppins', sans-serif;margin: 10px;">
- Table:{table}<br>Message: {message}<br>
+ <a href="index.html" style="color:grey;weight:bold;">
+ Back to Index</a><hr>
+ Table: {table}<br>Message: {message}<br>
Type: <span style="color:{'red' if msg_type == 'error' else
'orange'};font-family: 'Poppins', sans-serif;">
{msg_type}</span>