diff --git a/ecmwf/opendata/client.py b/ecmwf/opendata/client.py
index d0197c7..7c34256 100644
--- a/ecmwf/opendata/client.py
+++ b/ecmwf/opendata/client.py
@@ -285,7 +285,6 @@ def get_parts(self, data_urls, for_index):
 
         for name, values in for_index.items():
             diff = set(values).difference(possible_values[name])
-            print(diff, sorted(possible_values[name]))
             for d in diff:
                 warning_once(
                     "No index entries for %s=%s",