diff --git a/examples/000a_sps_tune_shift.py b/examples/000a_sps_tune_shift.py
index e5d381fa..f15d7f50 100644
--- a/examples/000a_sps_tune_shift.py
+++ b/examples/000a_sps_tune_shift.py
@@ -10,7 +10,6 @@
 
 import xwakes as xw
 import xtrack as xt
-import xfields as xf
 import xpart as xp
 import nafflib
 
@@ -64,7 +63,7 @@
 )
 
 # initialize a damper with 100 turns gain
-transverse_damper = xf.TransverseDamper(
+transverse_damper = xw.TransverseDamper(
     gain_x=2/100, gain_y=2/100,
     zeta_range=(-0.5*bucket_length, 0.5*bucket_length),
     num_slices=100,
@@ -73,7 +72,7 @@
 )
 
 # initialize a monitor for the average transverse positions
-monitor = xf.CollectiveMonitor(
+monitor = xw.CollectiveMonitor(
     base_file_name=f'sps_tune_shift',
     monitor_bunches=True,
     monitor_slices=False,
diff --git a/examples/000b_sps_tune_shift_multibunch.py b/examples/000b_sps_tune_shift_multibunch.py
index 27ca9c6f..2b698b81 100644
--- a/examples/000b_sps_tune_shift_multibunch.py
+++ b/examples/000b_sps_tune_shift_multibunch.py
@@ -3,14 +3,12 @@
 # Copyright (c) CERN, 2024.                 #
 # ######################################### #
 
-import matplotlib.pyplot as plt
 import numpy as np
 import pathlib
 import h5py
 
 import xwakes as xw
 import xtrack as xt
-import xfields as xf
 import xpart as xp
 import nafflib
 
@@ -71,7 +69,7 @@
 )
 
 # initialize a damper with 100 turns gain
-transverse_damper = xf.TransverseDamper(
+transverse_damper = xw.TransverseDamper(
     gain_x=2/100, gain_y=2/100,
     zeta_range=(-0.5*bucket_length, 0.5*bucket_length),
     num_slices=100,
@@ -81,7 +79,7 @@
 )
 
 # initialize a monitor for the average transverse positions
-monitor = xf.CollectiveMonitor(
+monitor = xw.CollectiveMonitor(
     base_file_name=f'sps_tune_shift',
     monitor_bunches=True,
     monitor_slices=False,
diff --git a/examples/000c_sps_tune_shift_multibunch_mpi.py b/examples/000c_sps_tune_shift_multibunch_mpi.py
index 3df1c558..7303bf17 100644
--- a/examples/000c_sps_tune_shift_multibunch_mpi.py
+++ b/examples/000c_sps_tune_shift_multibunch_mpi.py
@@ -11,7 +11,6 @@
 
 import xwakes as xw
 import xtrack as xt
-import xfields as xf
 import xpart as xp
 import nafflib
 
@@ -77,7 +76,7 @@
 )
 
 # initialize a damper with 100 turns gain
-transverse_damper = xf.TransverseDamper(
+transverse_damper = xw.TransverseDamper(
     gain_x=2/100, gain_y=2/100,
     zeta_range=(-0.5*bucket_length, 0.5*bucket_length),
     num_slices=100,
@@ -88,7 +87,7 @@
 
 # initialize a monitor for the average transverse positions
 my_rank = MPI.COMM_WORLD.Get_rank()
-monitor = xf.CollectiveMonitor(
+monitor = xw.CollectiveMonitor(
     base_file_name=f'sps_tune_shift_rank{my_rank}',
     monitor_bunches=True,
     monitor_slices=False,
diff --git a/xwakes/beam_elements/collective_monitor.py b/xwakes/beam_elements/collective_monitor.py
index b9456744..f136151d 100644
--- a/xwakes/beam_elements/collective_monitor.py
+++ b/xwakes/beam_elements/collective_monitor.py
@@ -73,6 +73,8 @@ class CollectiveMonitor(ElementWithSlicer):
         Use flattened wakes
     """
 
+    iscollective = True
+
     _stats_to_store = [
         'mean_x', 'mean_px', 'mean_y', 'mean_py', 'mean_zeta',
         'mean_delta', 'sigma_x', 'sigma_y', 'sigma_zeta',