diff --git a/sc2ts/utils.py b/sc2ts/utils.py
index f46d19e..0e4f4ce 100644
--- a/sc2ts/utils.py
+++ b/sc2ts/utils.py
@@ -357,8 +357,8 @@ def __init__(self, ts, show_progress=True, pango_source="Nextclade_pango"):
                 self.nodes_submission_date[node.id] = md["date_submitted"]
                 pango = md.get(pango_source, "unknown")
                 self.pango_lineage_samples[pango].append(node.id)
-                if "sc2ts_qc" in md:
-                    qc = md["sc2ts_qc"]
+                if "sc2ts" in md:
+                    qc = md["sc2ts"]["qc"]
                     self.nodes_num_masked_sites[node.id] = qc["num_masked_sites"]
                 else:
                     warnings.warn("Node QC metadata not available")