diff --git a/_data/memberList.json b/_data/memberList.json
index ff548831..4984a66f 100644
--- a/_data/memberList.json
+++ b/_data/memberList.json
@@ -19,8 +19,8 @@
         "github": "xldrkp",
         "affiliation": "Hamburg University of Technology (TUHH), Germany",
         "interests": "Axel is a philosopher and developer. He designs tools, workflows and events in the mindset of Open Education and Open Science.",
-        "start": 1659996000000.0,
-        "end": 1663970400000.0,
+        "start": "",
+        "end": "",
         "image": "axel-duerkop.jpg",
         "email": "axel.duerkop@tuhh.de",
         "link": ""