diff --git a/system_setup/common/wsl_conf.py b/system_setup/common/wsl_conf.py
index 341c8aca..8724d945 100644
--- a/system_setup/common/wsl_conf.py
+++ b/system_setup/common/wsl_conf.py
@@ -111,12 +111,13 @@ def default_loader(is_advanced=False):
     return data
 
 
-def wsl_config_update(config_class, root_dir):
+def wsl_config_update(config_class, root_dir, default_user=None):
     """
-    This update the configuration file for the given class.zzd
+    This update the configuration file for the given class.
 
     :param config_class: WSLConfigurationBase or WSLConfigurationAdvanced
-    :param is_dry_run: boolean, True if it is a dry run
+    :param root_dir: string, the root directory of the WSL
+    :param create_user: string, the user to create
     """
     temp_conf_default = {}
     temp_confname = config_class.__str__()
@@ -162,6 +163,11 @@ def wsl_config_update(config_class, root_dir):
                         config.add_section(config_section)
                     config[config_section][config_setting] = config_value
 
+        if config_type == "wsl" and default_user is not None:
+            if "user" not in config:
+                config.add_section("user")
+            config["user"]["default"] = default_user
+
         # sort config in ascii order
         for section in config._sections:
             config._sections[section] = \
diff --git a/system_setup/server/controllers/configure.py b/system_setup/server/controllers/configure.py
index 2d1951cc..096c4996 100644
--- a/system_setup/server/controllers/configure.py
+++ b/system_setup/server/controllers/configure.py
@@ -69,8 +69,10 @@ class ConfigureController(SubiquityController):
             dryrun = self.app.opts.dry_run
             variant = self.app.variant
             root_dir = self.model.root
+            username = None
             if variant == "wsl_setup":
                 wsl_id = self.model.identity.user
+                username = wsl_id.username
                 if dryrun:
                     log.debug("mimicking creating user %s",
                               wsl_id.username)
@@ -105,7 +107,8 @@ class ConfigureController(SubiquityController):
                 wsl_config_update(self.model.wslconfadvanced.wslconfadvanced,
                                   root_dir)
 
-            wsl_config_update(self.model.wslconfbase.wslconfbase, root_dir)
+            wsl_config_update(self.model.wslconfbase.wslconfbase, root_dir,
+                              default_user=username)
 
             self.app.update_state(ApplicationState.DONE)
         except Exception:
diff --git a/system_setup/tests/golden/answers/wsl.conf b/system_setup/tests/golden/answers/wsl.conf
index a4a69cfe..442a8b52 100644
--- a/system_setup/tests/golden/answers/wsl.conf
+++ b/system_setup/tests/golden/answers/wsl.conf
@@ -6,3 +6,6 @@ root = /custom_mnt_path
 generatehosts = false
 generateresolvconf = false
 
+[user]
+default = ubuntu
+
diff --git a/system_setup/tests/golden/autoinstall-full/wsl.conf b/system_setup/tests/golden/autoinstall-full/wsl.conf
index 449819ba..39ef73cf 100644
--- a/system_setup/tests/golden/autoinstall-full/wsl.conf
+++ b/system_setup/tests/golden/autoinstall-full/wsl.conf
@@ -12,3 +12,6 @@ enabled = false
 generatehosts = false
 generateresolvconf = false
 
+[user]
+default = ubuntu
+
diff --git a/system_setup/tests/golden/autoinstall/wsl.conf b/system_setup/tests/golden/autoinstall/wsl.conf
index a4a69cfe..442a8b52 100644
--- a/system_setup/tests/golden/autoinstall/wsl.conf
+++ b/system_setup/tests/golden/autoinstall/wsl.conf
@@ -6,3 +6,6 @@ root = /custom_mnt_path
 generatehosts = false
 generateresolvconf = false
 
+[user]
+default = ubuntu
+