diff --git a/src/c3nav/mapdata/views.py b/src/c3nav/mapdata/views.py
index d867d118..47e98b48 100644
--- a/src/c3nav/mapdata/views.py
+++ b/src/c3nav/mapdata/views.py
@@ -128,7 +128,7 @@ def tile(request, level, zoom, x, y, access_permissions=None):
                 f.write(data)
             with open(last_update_filename, 'w') as f:
                 f.write(base_cache_key)
-            cache.get(tile_cache_update_cache_key, base_cache_key, 60)
+            cache.set(tile_cache_update_cache_key, base_cache_key, 60)
 
     response = HttpResponse(data, 'image/png')
     response['ETag'] = tile_etag