diff --git a/src/spikeinterface/core/sortinganalyzer.py b/src/spikeinterface/core/sortinganalyzer.py
index 7a4f08f9b6..b5885598fe 100644
--- a/src/spikeinterface/core/sortinganalyzer.py
+++ b/src/spikeinterface/core/sortinganalyzer.py
@@ -2012,6 +2012,10 @@ def get_metrics_extension_data(self):
         -------
         metrics_df : pandas.DataFrame
             A concatenated dataframe with all available metrics.
+
+        Note
+        ----
+        Duplicated columns are removed (can happen if several metric extensions have a metric with the same name).
         """
         import pandas as pd
         from spikeinterface.core.analyzer_extension_core import BaseMetricExtension
@@ -2030,6 +2034,10 @@ def get_metrics_extension_data(self):
             metrics_df = pd.concat(all_metrics_data, axis=1)
         else:
             metrics_df = pd.DataFrame(index=self.unit_ids)
+
+        # Remove duplicated columns (can happen if several metric extensions have a metric with the same name)
+        metrics_df = metrics_df.loc[:, ~metrics_df.columns.duplicated()]
+
         return metrics_df