if template is not file, use name for cache key
diff --git a/jinja2/environment.py b/jinja2/environment.py
index 5055ed3..7bf8b31 100644
--- a/jinja2/environment.py
+++ b/jinja2/environment.py
@@ -758,7 +758,10 @@
if self.loader is None:
raise TypeError('no loader for this environment specified')
# use abs path for cache key
- cache_key = self.loader.get_source(self, name)[1]
+ _, cache_key, _ = self.loader.get_source(self, name)
+ # if template is not file, use name for cache key
+ if cache_key is None:
+ cache_key = name
if self.cache is not None:
template = self.cache.get(cache_key)
if template is not None and (not self.auto_reload or \
