diff --git a/gateway/session.py b/gateway/session.py
index 96013df513940..a8c67691adcdf 100644
--- a/gateway/session.py
+++ b/gateway/session.py
@@ -807,9 +807,7 @@ def suspend_recently_active(self, max_age_seconds: int = 120) -> int:
         to avoid resetting long-idle sessions that are harmless to resume.
         Returns the number of sessions that were suspended.
         """
-        import time as _time
-
-        cutoff = _time.time() - max_age_seconds
+        cutoff = _now() - timedelta(seconds=max_age_seconds)
         count = 0
         with self._lock:
             self._ensure_loaded_locked()