diff --git a/core/views/caves.py b/core/views/caves.py
index 0d69b74..c468362 100644
--- a/core/views/caves.py
+++ b/core/views/caves.py
@@ -389,8 +389,7 @@ def edit_cave(request, path="", slug=None):
     else:
         if slug is not None:
             # re-read cave data from file.
-            filename = str(cave.slug() +".html")
-            read_cave(filename, cave=cave)
+            read_cave(cave.filename, cave=cave)
         
             form = CaveForm(instance=cave, initial={'cave_slug': cave.slug()})
             ceFormSet = CaveAndEntranceFormSet(queryset=cave.caveandentrance_set.all())