diff --git a/src/spikeinterface/core/basesorting.py b/src/spikeinterface/core/basesorting.py
index 95e2aa93d4..e33f85e7e5 100644
--- a/src/spikeinterface/core/basesorting.py
+++ b/src/spikeinterface/core/basesorting.py
@@ -288,7 +288,7 @@ def count_num_spikes_per_unit(self, outputs="dict"):
 
         # speed strategy by order
         # 1. if _cached_spike_trains have all units then use it
-        # 2. if _cached_spike_vector is not non use it
+        # 2. if _cached_spike_vector is not non use it
         # 3. loop with get_unit_spike_train
 
         # check if all spiketrains are cached
@@ -313,7 +313,6 @@ def count_num_spikes_per_unit(self, outputs="dict"):
             unit_indices, counts = np.unique(spike_vector["unit_index"], return_counts=True)
             num_spikes[unit_indices] = counts
 
-
         if outputs == "array":
             return num_spikes
         elif outputs == "dict":