diff --git a/meilisearch/client.py b/meilisearch/client.py
index 17513939..d5b6ae62 100644
--- a/meilisearch/client.py
+++ b/meilisearch/client.py
@@ -512,7 +512,7 @@ def cancel_tasks(self, parameters: Dict[str, Any]) -> TaskInfo:
 
         Parameters
         ----------
-        parameters (optional):
+        parameters:
             parameters accepted by the cancel tasks route:https://docs.meilisearch.com/reference/api/tasks.html#cancel-tasks.
 
         Returns
diff --git a/meilisearch/task.py b/meilisearch/task.py
index 274484c7..cd3e6617 100644
--- a/meilisearch/task.py
+++ b/meilisearch/task.py
@@ -75,12 +75,12 @@ def get_task(self, uid: int) -> Task:
         task = self.http.get(f"{self.config.paths.task}/{uid}")
         return Task(**task)
 
-    def cancel_tasks(self, parameters: Optional[Dict[str, Any]] = None) -> TaskInfo:
+    def cancel_tasks(self, parameters: Dict[str, Any]) -> TaskInfo:
         """Cancel a list of enqueued or processing tasks.
 
         Parameters
         ----------
-        parameters (optional):
+        parameters:
             parameters accepted by the cancel tasks https://docs.meilisearch.com/reference/api/tasks.html#cancel-task.
 
         Returns
@@ -94,8 +94,6 @@ def cancel_tasks(self, parameters: Optional[Dict[str, Any]] = None) -> TaskInfo:
         MeilisearchApiError
             An error containing details about why Meilisearch can't process your request. Meilisearch error codes are described here: https://docs.meilisearch.com/errors/#meilisearch-errors
         """
-        if parameters is None:
-            parameters = {}
         for param in parameters:
             if isinstance(parameters[param], list):
                 parameters[param] = ",".join(parameters[param])