diff --git a/mop/management/commands/fit_need_events_PSPL.py b/mop/management/commands/fit_need_events_PSPL.py
index 128813f..4a7164c 100644
--- a/mop/management/commands/fit_need_events_PSPL.py
+++ b/mop/management/commands/fit_need_events_PSPL.py
@@ -106,7 +106,7 @@ def select_random_events(target_list, max_nevents):
     Function to select a random set of max_nevents from the list provided
     """
     rng = np.random.default_rng()
-    target_list = rng.shuffle(target_list)
+    rng.shuffle(target_list)
     selected_targets = target_list[0:max_nevents]
 
     return selected_targets