diff --git a/ayon_api/_api.py b/ayon_api/_api.py
index 500955995..04b402aa8 100644
--- a/ayon_api/_api.py
+++ b/ayon_api/_api.py
@@ -2235,7 +2235,7 @@ def update_bundle(
     is_production: Optional[bool] = None,
     is_staging: Optional[bool] = None,
     is_dev: Optional[bool] = None,
-    dev_active_user: Optional[str] = None,
+    dev_active_user: Optional[str] = NOT_SET,
     dev_addons_config: Optional[dict[str, DevBundleAddonInfoDict]] = None,
 ) -> None:
     """Update bundle on server.
diff --git a/ayon_api/_api_helpers/bundles_addons.py b/ayon_api/_api_helpers/bundles_addons.py
index 1b70967ec..6355b62eb 100644
--- a/ayon_api/_api_helpers/bundles_addons.py
+++ b/ayon_api/_api_helpers/bundles_addons.py
@@ -8,6 +8,7 @@
     RequestTypes,
     prepare_query_string,
     TransferProgress,
+    NOT_SET,
 )
 
 from .base import BaseServerAPI
@@ -135,7 +136,7 @@ def update_bundle(
         is_production: Optional[bool] = None,
         is_staging: Optional[bool] = None,
         is_dev: Optional[bool] = None,
-        dev_active_user: Optional[str] = None,
+        dev_active_user: Optional[str] = NOT_SET,
         dev_addons_config: Optional[dict[str, DevBundleAddonInfoDict]] = None,
     ) -> None:
         """Update bundle on server.
@@ -171,11 +172,12 @@ def update_bundle(
                 ("isProduction", is_production),
                 ("isStaging", is_staging),
                 ("isDev", is_dev),
-                ("activeUser", dev_active_user),
                 ("addonDevelopment", dev_addons_config),
             )
             if value is not None
         }
+        if dev_active_user is not NOT_SET:
+            body["activeUser"] = dev_active_user
 
         response = self.patch(
             f"bundles/{bundle_name}",