diff --git a/PVE/Ceph/Tools.pm b/PVE/Ceph/Tools.pm
index 464c5c8a..65fc8c72 100644
--- a/PVE/Ceph/Tools.pm
+++ b/PVE/Ceph/Tools.pm
@@ -203,7 +203,7 @@ sub destroy_pool {
 	prefix => "osd pool delete",
 	pool => $pool,
 	pool2 => $pool,
-	sure => '--yes-i-really-really-mean-it',
+	'yes_i_really_really_mean_it' => JSON::true,
 	format => 'plain',
     });
 }