1 files changed, 7 insertions, 0 deletions
diff --git a/synapse/state.py b/synapse/state.py
index 081bc31bb5..8a056ee955 100644
--- a/synapse/state.py
+++ b/synapse/state.py
@@ -168,10 +168,17 @@ class StateHandler(object):
         first is the name of a state group if one and only one is involved,
         otherwise `None`.
         """
+        logger.debug("resolve_state_groups event_ids %s", event_ids)
+
         state_groups = yield self.store.get_state_groups(
             event_ids
         )
 
+        logger.debug(
+            "resolve_state_groups state_groups %s",
+            state_groups.keys()
+        )
+
         group_names = set(state_groups.keys())
         if len(group_names) == 1:
             name, state_list = state_groups.items().pop()