diff --git a/copernicusmarine/python_interface/get.py b/copernicusmarine/python_interface/get.py
index 9af982f0..9ddea310 100644
--- a/copernicusmarine/python_interface/get.py
+++ b/copernicusmarine/python_interface/get.py
@@ -15,7 +15,7 @@
 @deprecated_python_option(DEPRECATED_OPTIONS)
 @log_exception_and_exit
 def get(
-    dataset_id: Optional[str],
+    dataset_id: Optional[str] = None,
     dataset_version: Optional[str] = None,
     dataset_part: Optional[str] = None,
     username: Optional[str] = None,
diff --git a/copernicusmarine/python_interface/subset.py b/copernicusmarine/python_interface/subset.py
index 4211b416..f58cc3d9 100644
--- a/copernicusmarine/python_interface/subset.py
+++ b/copernicusmarine/python_interface/subset.py
@@ -25,7 +25,7 @@
 @deprecated_python_option(DEPRECATED_OPTIONS)
 @log_exception_and_exit
 def subset(
-    dataset_id: Optional[str],
+    dataset_id: Optional[str] = None,
     dataset_version: Optional[str] = None,
     dataset_part: Optional[str] = None,
     username: Optional[str] = None,