diff --git a/openquake/calculators/event_based_damage.py b/openquake/calculators/event_based_damage.py
index 2fb5d07eb4d9..1b90b9d00068 100644
--- a/openquake/calculators/event_based_damage.py
+++ b/openquake/calculators/event_based_damage.py
@@ -312,7 +312,7 @@ def _store_connectivity_analysis_results(self, conn_results):
         if 'event_connectivity_loss_eff' in conn_results:
             # FIXME
             print(conn_results['event_connectivity_loss_eff'])
-            print(conn_results['event_connectivity_loss_eff'].dtype)
+            print(conn_results['event_connectivity_loss_eff'].dtypes)
             self.datastore.create_df(
                 'infra-event_efl',
                 conn_results['event_connectivity_loss_eff'],