diff --git a/instances/heimdall/configuration.nix b/instances/heimdall/configuration.nix
index 0559eae..e9293f8 100644
--- a/instances/heimdall/configuration.nix
+++ b/instances/heimdall/configuration.nix
@@ -91,7 +91,7 @@ in
         users.iotdevice = {
           acl = [
             # "pattern readwrite #"
-            "topic readwrite #"
+            "readwrite #"
           ];
           password = "mysweetpassword-or-use-hashedPassword";
         };