diff --git a/geoportal/c2cgeoportal_geoportal/lib/caching.py b/geoportal/c2cgeoportal_geoportal/lib/caching.py
index 92a507450b..e802e6d6eb 100644
--- a/geoportal/c2cgeoportal_geoportal/lib/caching.py
+++ b/geoportal/c2cgeoportal_geoportal/lib/caching.py
@@ -33,6 +33,7 @@
 
 from dogpile.cache.util import compat
 from dogpile.cache.region import make_region
+from pyramid.request import Request
 
 log = logging.getLogger(__name__)
 _regions = {}
@@ -70,6 +71,7 @@ def generate_key(*args, **kw):
         parts = [namespace]
         if has_self:
             args = args[1:]
+        args = [arg for arg in args if not isinstance(arg, Request)]
         parts.extend(map(compat.text_type, map(map_dbobject, args)))
         return "|".join(parts)
     return generate_key