diff --git a/src/spikeinterface/postprocessing/tests/common_extension_tests.py b/src/spikeinterface/postprocessing/tests/common_extension_tests.py
index 15eea06ae2..c99b2d4f3b 100644
--- a/src/spikeinterface/postprocessing/tests/common_extension_tests.py
+++ b/src/spikeinterface/postprocessing/tests/common_extension_tests.py
@@ -77,7 +77,6 @@ class instance is used for each. In this case, we have to set
         )
         self.__class__.cache_folder = create_cache_folder
 
-    # TODO: can delete this!!!
     def _prepare_sorting_analyzer(self, format, sparse, extension_class):
         """
         Prepare a SortingAnalyzer object with dependencies already computed