diff --git a/evalharness/agent/envs/swe_agentic.py b/evalharness/agent/envs/swe_agentic.py
index 7bc968c..f99b212 100644
--- a/evalharness/agent/envs/swe_agentic.py
+++ b/evalharness/agent/envs/swe_agentic.py
@@ -111,7 +111,9 @@ def _docker(args, timeout=300):
 class SWEAgenticEnvironment(Environment):
     """Self-running env: one persistent container per sample."""
 
-    def __init__(self):
+    def __init__(self, adapter=None, **_):
+        # adapter arg: get_env uniform signature (unused here; the adapter
+        # is passed to run_task per sample)
         self.container = ''
 
     # ---- container lifecycle ----