diff --git a/api-daemon/pvcapid/flaskapi.py b/api-daemon/pvcapid/flaskapi.py
index 1f1e3e58..8345fe74 100755
--- a/api-daemon/pvcapid/flaskapi.py
+++ b/api-daemon/pvcapid/flaskapi.py
@@ -3565,7 +3565,7 @@ class API_VM_Autobackup_Root(Resource):
 
         task = run_celery_task(
             "cluster.autobackup",
-            force_full=reqargs.get("force_full", False),
+            force_full=bool(strtobool(reqargs.get("force_full", "false"))),
             email_recipients=email_recipients,
             run_on="primary",
         )