diff --git a/src/spikeinterface/core/analyzer_extension_core.py b/src/spikeinterface/core/analyzer_extension_core.py
index 8ecd76c8af..5d48434de0 100644
--- a/src/spikeinterface/core/analyzer_extension_core.py
+++ b/src/spikeinterface/core/analyzer_extension_core.py
@@ -526,7 +526,7 @@ def get_templates(self, unit_ids=None):
 
         Parameters
         ----------
-        unit_ids: list or None
+        unit_ids: list or None, default: None
             Unit ids to retrieve waveforms for
 
         Returns