diff --git a/staedl/config.json b/staedl/config.json
index 90b20835cee1f1283f4eab0fea630b986d26a183..9592d3c2da3bc4bc564f4c44d4f6650c30968159 100644
--- a/staedl/config.json
+++ b/staedl/config.json
@@ -15,11 +15,11 @@
       },
       "detail": {
         "size": 1025,
-        "url": "https://vikusviewer.fh-potsdam.de/staedl/data/1024jpg/"
+        "url": "https://vikusviewer.fh-potsdam.de/staedl/data/1024/"
       },
       "big": {
         "size": 4096,
-        "url": "https://vikusviewer.fh-potsdam.de/staedl/data/4096jpg/"
+        "url": "https://vikusviewer.fh-potsdam.de/staedl/data/4096/"
       }
     }
   },