diff --git a/tests/test_daemon.py b/tests/test_daemon.py
index 8a002cf..4570410 100644
--- a/tests/test_daemon.py
+++ b/tests/test_daemon.py
@@ -18,7 +18,6 @@ SCRIPT = Path(os.environ.get("XIDLE_INHIBIT") or Path(__file__).resolve().parent
 BUS_NAME = "org.freedesktop.ScreenSaver"
 OBJECT_PATH = "/org/freedesktop/ScreenSaver"
 STATE_FILE = "xidle-inhibit.json"
-OLD_STATE_FILE = "xautolock-inhibit.json"
 TIMEOUT = 5.0
 DELAY = ["--release-delay", "1"]
 SETTLE = 1.5  # longer than DELAY, to check that nothing happens
@@ -387,21 +386,6 @@ def test_old_crash_is_not_restored(sb: Sandbox) -> None:
     assert "over the 30s window" in sb.log()
 
 
-def test_old_state_file_is_read_once_and_deleted(sb: Sandbox) -> None:
-    a = sb.client()
-    old = sb.runtime / OLD_STATE_FILE
-    old.write_text(json.dumps({
-        "bus_id": a.conn.get_guid(), "last_cookie": 7, "stopped_at": time.time(),
-        "cookies": [[7, a.name, "test-app", "Playing video"]],
-    }))
-    sb.start()
-    assert sb.calls() == [DISABLE]
-    assert "(xautolock-inhibit)" in sb.log()
-    assert not old.exists()
-    assert json.loads(sb.state_file.read_text())["cookies"] == [[7, a.name, "test-app", "Playing video"]]
-    assert a.inhibit() == 8
-
-
 def test_unreadable_state_file_is_ignored(sb: Sandbox) -> None:
     sb.state_file.write_text("{not json")
     sb.start()
diff --git a/xidle-inhibit b/xidle-inhibit
index 7a9b605..26cd2ce 100755
--- a/xidle-inhibit
+++ b/xidle-inhibit
@@ -31,7 +31,6 @@ OBJECT_PATHS = ("/org/freedesktop/ScreenSaver", "/ScreenSaver")  # Vivaldi uses
 EXIT_NAME_TAKEN = 2
 ACTIVITY_QUIET = 300  # seconds without SimulateUserActivity that end a logged burst
 STATE_FILE = "xidle-inhibit.json"  # in $XDG_RUNTIME_DIR
-OLD_STATE_FILE = "xautolock-inhibit.json"  # before the rename (0.2); read once when upgrading
 STATE_HEARTBEAT = 10  # seconds between state file touches while inhibits are held
 CONFIG_FILE = "xidle-inhibit/config"  # in $XDG_CONFIG_HOME
 BACKENDS = ("xautolock", "xss-lock")
@@ -228,14 +227,6 @@ class Inhibitor:
         self.restore()
         self.state_ready = True
         self.save()
-        if self.state_path:
-            old = os.path.join(os.path.dirname(self.state_path), OLD_STATE_FILE)
-            try:
-                os.remove(old)
-            except FileNotFoundError:
-                pass
-            except OSError as e:
-                log(f"Cannot remove old state file {old}: {e}")
         if self.active_count():
             self.block()
         elif self.xautolock:
@@ -248,9 +239,6 @@ class Inhibitor:
             return
         assert self.conn is not None
         path = self.state_path
-        old = os.path.join(os.path.dirname(path), OLD_STATE_FILE)
-        if not os.path.exists(path) and os.path.exists(old):
-            path = old
         try:
             with open(path) as f:
                 state = json.load(f)
@@ -263,8 +251,6 @@ class Inhibitor:
         except (OSError, ValueError, KeyError, TypeError) as e:
             log(f"Ignoring unreadable state file {path}: {e}")
             return
-        if path == old:
-            log(f"Reading inhibits from {old} (xautolock-inhibit)")
         if bus_id != self.conn.get_guid():
             # Unique names like :1.42 are reused by a new bus, so they would mean other clients.
             if saved: