diff --git a/policies/tenant-admins.policy.hcl b/policies/tenant-admins.policy.hcl
index 5829bee..1b2e55c 100644
--- a/policies/tenant-admins.policy.hcl
+++ b/policies/tenant-admins.policy.hcl
@@ -9,7 +9,7 @@ path "sys/mounts/${tenant_prefix}/*" {
 path "sys/remount" {
   capabilities = ["update"]
   allowed_parameters = {
-    from = "${tenant_prefix}/*"
-    to = "${tenant_prefix}/*"
+    from = ["${tenant_prefix}/*"]
+    to = ["${tenant_prefix}/*"]
   }
 }