diff --git a/python-client/wmill/wmill/client.py b/python-client/wmill/wmill/client.py
index b9529b48f2..cf6d1f9d51 100644
--- a/python-client/wmill/wmill/client.py
+++ b/python-client/wmill/wmill/client.py
@@ -1728,7 +1728,7 @@ class SqlQuery:
         if result_collection is not None:
             sql = f'-- result_collection={result_collection}\n{sql}'
         return self.fetch_fn(sql)
-    def fetchOne(self):
+    def fetch_one(self):
         return self.fetch(result_collection="last_statement_first_row")
 
 def infer_sql_type(value) -> str: