diff --git a/config/hosts/daiyousei/nixos.nix b/config/hosts/daiyousei/nixos.nix
index dfa700cb..d67dc79b 100644
--- a/config/hosts/daiyousei/nixos.nix
+++ b/config/hosts/daiyousei/nixos.nix
@@ -6,7 +6,6 @@
   ];
 
   kw.oci = {
-    base = "Canonical Ubuntu";
     specs = {
       shape = "VM.Standard.A1.Flex";
       cores = 4;
diff --git a/config/hosts/rinnosuke/nixos.nix b/config/hosts/rinnosuke/nixos.nix
index 79dc8a04..5edd66cc 100644
--- a/config/hosts/rinnosuke/nixos.nix
+++ b/config/hosts/rinnosuke/nixos.nix
@@ -6,7 +6,6 @@
   ];
 
   kw.oci = {
-    base = "Canonical Ubuntu";
     specs = {
       shape = "VM.Standard.E2.1.Micro";
       cores = 1;
diff --git a/config/profiles/hardware/oracle/common.nix b/config/profiles/hardware/oracle/common.nix
index 0709f480..b33b072c 100644
--- a/config/profiles/hardware/oracle/common.nix
+++ b/config/profiles/hardware/oracle/common.nix
@@ -91,7 +91,7 @@ in
         tf.ipv6.address = tf.resources.rinnosuke_ipv6.refAttr "ip_address";
         };
       };
-      firewall.public.interfaces singleton interface;
+      firewall.public.interfaces = singleton interface;
       tf = {
         enable = true;
         ipv4_attr = "public_ip";
diff --git a/config/profiles/hardware/oracle/default.nix b/config/profiles/hardware/oracle/default.nix
index 432c1a0e..fad35b9e 100644
--- a/config/profiles/hardware/oracle/default.nix
+++ b/config/profiles/hardware/oracle/default.nix
@@ -6,6 +6,7 @@
         ubuntu = true;
         common = true;
       };
+      kw.oci.base = "Canonical Ubuntu";
       imports = with import (sources.tf-nix + "/modules"); [
         nixos.ubuntu-linux
         common
@@ -16,6 +17,7 @@
         oracle = true;
         common = true;
       };
+      kw.oci.base = "Oracle Linux";
       imports = with import (sources.tf-nix + "/modules"); [
         nixos.oracle-linux
         common