diff --git a/modules/netns-isolation.nix b/modules/netns-isolation.nix
index aa664cd..a2578c8 100644
--- a/modules/netns-isolation.nix
+++ b/modules/netns-isolation.nix
@@ -50,7 +50,7 @@ in {
 
     addressblock = mkOption {
       type = types.ints.u8;
-      default = "1";
+      default = 1;
       description = ''
         The address block N in 169.254.N.0/24, used as the prefix for netns addresses.
       '';
diff --git a/modules/presets/secure-node.nix b/modules/presets/secure-node.nix
index f7320e6..1ff4103 100644
--- a/modules/presets/secure-node.nix
+++ b/modules/presets/secure-node.nix
@@ -49,11 +49,6 @@ in {
       hiddenServices.sshd = mkHiddenService { port = 22; };
     };
 
-    # netns-isolation
-    nix-bitcoin.netns-isolation = {
-      addressblock = 1;
-    };
-
     # bitcoind
     services.bitcoind = {
       enable = true;