diff --git a/cave_data/1623-2023-ASH-17.html b/cave_data/1623-2023-ASH-17.html
index 8cb325e0b..0ac0343f4 100644
--- a/cave_data/1623-2023-ASH-17.html
+++ b/cave_data/1623-2023-ASH-17.html
@@ -53,7 +53,7 @@ code used in the Austrian kataster e.g '1/S +' - https://expo/.survex.com/katast
 <underground_description>A small horizontal cave with a couple of entrances and several too-tight skylights. Could potentially be used as a 3-man bivvy</underground_description><!-- Underground description. (description of approach and entrance goes in entrance file). For a small cave this will be the entire description. For larger caves it will be the front page of the description, or a short intro, containing links to other pages with the cave description in, or even nothing but a link. -->
 <equipment>none required</equipment><!-- For a small cave, summary of gear needed to descend. For longer caves it could be blank, a table, or just refer to the description/topos. Leave blank if this info is in the description. -->
 <references></references><!-- References to documentation. Could be Journal articles or Logbook entries. Can be links if the docs are online. -->
-<survey><a href='/1623/l/2023-ASH-17-sketch.html'><img src='/1623/t/2023-ASH-17-sketch.jpg' /></a>
+<survey><a href='/1623/l/2023-ASH-17-sketch.html'><img src='/1623/i/2023-ASH-17-sketch.jpg' /></a>
 <p>
   <a href='/1623/2023-ASH-17/l/2023-ASH-17-sketch.html'><img src='/1623/2023-ASH-17/i/2023-ASH-17-sketch.jpg' /></a></survey><!-- Drawn-up surveys. Scans of paper surveys or images/PDFs of electronic surveys. Should include HTML to display current plan and elevation, with links to larger versions (See section on URLs and files). Could list links to multiple years of survey, or even a separate survey page if it's complicated enough. -->
 <kataster_status></kataster_status>