diff --git a/decnet/clustering/campaign/impl/similarity.py b/decnet/clustering/campaign/impl/similarity.py
index 2aa5bba8..38101405 100644
--- a/decnet/clustering/campaign/impl/similarity.py
+++ b/decnet/clustering/campaign/impl/similarity.py
@@ -342,7 +342,7 @@ def combined_campaign_weight(
 # ─── Adapter for synthetic-fixture tests ────────────────────────────────────
 
 
-def from_synthetic_identity(att, identity_uuid: Optional[str] = None) -> IdentityFeatures:  # type: ignore[no-untyped-def]
+def from_synthetic_identity(att, identity_uuid: Optional[str] = None) -> IdentityFeatures:
     """Build an :class:`IdentityFeatures` from a ``SyntheticAttacker``.
 
     Treats one ``SyntheticAttacker`` as one identity — adequate for
diff --git a/decnet/clustering/impl/similarity.py b/decnet/clustering/impl/similarity.py
index 3e69ac37..9122eb69 100644
--- a/decnet/clustering/impl/similarity.py
+++ b/decnet/clustering/impl/similarity.py
@@ -265,7 +265,7 @@ def combined_edge_weight(a: Observation, b: Observation) -> float:
 # ─── Adapter for the synthetic-corpus tests ─────────────────────────────────
 
 
-def from_synthetic(att) -> Observation:  # type: ignore[no-untyped-def]
+def from_synthetic(att) -> Observation:
     """Build an :class:`Observation` from a ``SyntheticAttacker``.
 
     Lives here so test code doesn't import the factory shape into the