diff --git a/scrapy/extensions/feedexport.py b/scrapy/extensions/feedexport.py
index 7c7db387e..22ebf3b3f 100644
--- a/scrapy/extensions/feedexport.py
+++ b/scrapy/extensions/feedexport.py
@@ -269,9 +269,10 @@ class FeedExporter(object):
             try:
                 self._get_storage(uri)
                 return True
-            except NotConfigured:
-                logger.error("Disabled feed storage scheme: %(scheme)s",
-                             {'scheme': scheme})
+            except NotConfigured as e:
+                logger.error("Disabled feed storage scheme: %(scheme)s. "
+                             "Reason: %(reason)s",
+                             {'scheme': scheme, 'reason': str(e)})
         else:
             logger.error("Unknown feed storage scheme: %(scheme)s",
                          {'scheme': scheme})