diff --git a/README.md b/README.md
index 80ca364..17f9290 100644
--- a/README.md
+++ b/README.md
@@ -76,8 +76,10 @@ fishctl config update
 
 ### Validate the config files
 
-To validate the config files, run the following command. Note that this only performs a formal validation and does not check that the settings are appropriate. For example, this command does not check if the database password is correct.
+Execute the following command to validate the config files.
 
 ```sh
 fishctl config validate
 ```
+
+Note that this only performs a formal validation and does not check that the settings are appropriate. For example, this command does not check if the database password is correct.
diff --git a/src/command/config.rs b/src/command/config.rs
index 3139ce3..881a740 100644
--- a/src/command/config.rs
+++ b/src/command/config.rs
@@ -3,7 +3,7 @@
 mod update;
 mod validate;
 
-use crate::config::{Revision, CLIENT_CONFIG_PATH, OLD_CONFIG_PATH, SERVER_CONFIG_PATH};
+use crate::config::{Revision, CLIENT_CONFIG_PATH, SERVER_CONFIG_PATH};
 use clap::Subcommand;
 use serde::Deserialize;
 use std::{
@@ -68,7 +68,7 @@ where
 }
 
 fn current_revision() -> Result<Revision, RevisionCheckError> {
-    let old_config_exists = Path::new(OLD_CONFIG_PATH).is_file();
+    let old_config_exists = Path::new(".config/default.yml").is_file();
     let server_config_exists = Path::new(SERVER_CONFIG_PATH).is_file();
     let client_config_exists = Path::new(CLIENT_CONFIG_PATH).is_file();
 
diff --git a/src/command/config/update/v1.rs b/src/command/config/update/v1.rs
index 7f95915..54c95a9 100644
--- a/src/command/config/update/v1.rs
+++ b/src/command/config/update/v1.rs
@@ -3,7 +3,7 @@
 
 use crate::{
     command::config::{read_file_as_string, ReadError},
-    config::{client, server, Revision, CLIENT_CONFIG_PATH, OLD_CONFIG_PATH, SERVER_CONFIG_PATH},
+    config::{client, server, Revision, CLIENT_CONFIG_PATH, SERVER_CONFIG_PATH},
 };
 use color_print::cprintln;
 use sqlx::{postgres::PgConnectOptions, ConnectOptions};
@@ -19,7 +19,7 @@ use yaml_rust::{Yaml, YamlLoader};
 /// Errors that can happen in `config update v1` subcommand
 #[derive(thiserror::Error, Debug)]
 pub(crate) enum Error {
-    #[error("failed to parse the old config file ({})", OLD_CONFIG_PATH)]
+    #[error("failed to parse the old config file (.config/default.yml)")]
     ReadYaml(#[from] ReadYamlConfigError),
     #[error(transparent)]
     WriteToml(#[from] WriteTomlConfigError),
@@ -58,7 +58,7 @@ pub(crate) enum WriteTomlConfigError {
 }
 
 fn read_default_yml() -> Result<HashMap<String, Yaml>, ReadYamlConfigError> {
-    let content = YamlLoader::load_from_str(&read_file_as_string(OLD_CONFIG_PATH)?)?;
+    let content = YamlLoader::load_from_str(&read_file_as_string(".config/default.yml")?)?;
 
     if content.is_empty() {
         return Err(ReadYamlConfigError::InvalidConfig(
diff --git a/src/config/client.rs b/src/config/client.rs
index aba7ca7..b4ddd7c 100644
--- a/src/config/client.rs
+++ b/src/config/client.rs
@@ -5,7 +5,7 @@
 // Optional values are handled in the main Firefish program, and this tool
 // does not take care of it.
 
-use super::{ensure_latest_revision, Revision};
+use crate::config::{ensure_latest_revision, Revision};
 use serde::{Deserialize, Serialize};
 use validator::{Validate, ValidationError};
 
diff --git a/src/config/mod.rs b/src/config/mod.rs
index 6e93dad..3438ff8 100644
--- a/src/config/mod.rs
+++ b/src/config/mod.rs
@@ -10,7 +10,6 @@ use validator::ValidationError;
 
 pub(crate) const SERVER_CONFIG_PATH: &str = "config/server.toml";
 pub(crate) const CLIENT_CONFIG_PATH: &str = "config/client.toml";
-pub(crate) const OLD_CONFIG_PATH: &str = ".config/default.yml";
 
 #[derive(Deserialize_repr, Serialize_repr, PartialEq, Clone, ValueEnum, Sequence, Debug)]
 #[clap(rename_all = "lowercase")]
@@ -19,7 +18,7 @@ pub enum Revision {
     #[clap(skip)]
     /// Misskey-style config (`.config/default.yml`)
     V0,
-    /// The first revision number for `config/{server,client}.toml`
+    /// The first revision for `config/{server,client}.toml`
     V1,
 }
 
diff --git a/src/config/server.rs b/src/config/server.rs
index 3783146..39820ac 100644
--- a/src/config/server.rs
+++ b/src/config/server.rs
@@ -5,7 +5,7 @@
 // Optional values are handled in the main Firefish program, and this tool
 // does not take care of it.
 
-use super::{ensure_latest_revision, Revision};
+use crate::config::{ensure_latest_revision, Revision};
 use serde::{Deserialize, Serialize};
 use validator::Validate;