diff --git a/wetb/gtsdf/__init__.py b/wetb/gtsdf/__init__.py
index 17b89f563320bc6db9b087869bda9d4135cee862..0c84199f52b04b0e90da6e7ac32a120f6e28a62b 100644
--- a/wetb/gtsdf/__init__.py
+++ b/wetb/gtsdf/__init__.py
@@ -64,6 +64,8 @@ class Dataset(object):
             try:
                 return self(name)
             except:
+                for i, n in enumerate(self.info['attribute_names']):
+                    print (i,n)
                 raise e