diff --git a/instances/heimdall/configuration.nix b/instances/heimdall/configuration.nix
index cc5ec68..ddc9f77 100644
--- a/instances/heimdall/configuration.nix
+++ b/instances/heimdall/configuration.nix
@@ -90,7 +90,8 @@ in
         omitPasswordAuth = true;
         users.iotdevice = {
           acl = [
-            "pattern readwrite #"
+            # "pattern readwrite #"
+            "topic readwrite #"
           ];
           password = "mysweetpassword-or-use-hashedPassword";
         };