diff --git a/roles/prometheus/tasks/flush.yml b/roles/prometheus/tasks/flush.yml
index 70f792b..d833619 100644
--- a/roles/prometheus/tasks/flush.yml
+++ b/roles/prometheus/tasks/flush.yml
@@ -9,7 +9,7 @@
     mode: 0644
   vars:
     prometheus_additional_arguments:
-      "{{ prometheus_additional_arguments }} --web.enable-admin-api --web.listen-address=127.0.0.1:9090"
+      "--web.enable-admin-api --web.listen-address=127.0.0.1:9090"
   notify: restart prometheus
 
 - name: flush handlers