diff --git a/src/osmo_ms_driver/__main__.py b/src/osmo_ms_driver/__main__.py
index ef06393a..5314d712 100644
--- a/src/osmo_ms_driver/__main__.py
+++ b/src/osmo_ms_driver/__main__.py
@@ -19,14 +19,13 @@
 from .event_server import EventServer
 from .simple_loop import SimpleLoop
 from .location_update_test import MassUpdateLocationTest
-from .cdf import ease_in_out_duration, linear_with_duration, cdfs
+from .cdf import cdfs
 from osmo_gsm_tester import log
 
 # System modules
 import argparse
 import atexit
 import datetime
-import subprocess
 import signal
 import tempfile
 import os.path
diff --git a/src/osmo_ms_driver/event_server.py b/src/osmo_ms_driver/event_server.py
index b0f699d9..ce9d5c12 100644
--- a/src/osmo_ms_driver/event_server.py
+++ b/src/osmo_ms_driver/event_server.py
@@ -1,6 +1,5 @@
 
 from osmo_gsm_tester import log
-from functools import partial
 
 import time
 
diff --git a/src/osmo_ms_driver/simple_loop.py b/src/osmo_ms_driver/simple_loop.py
index f4b3e05a..29a4b5be 100644
--- a/src/osmo_ms_driver/simple_loop.py
+++ b/src/osmo_ms_driver/simple_loop.py
@@ -16,7 +16,6 @@
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 from osmo_gsm_tester import log
-from functools import partial
 
 import os
 import selectors