diff --git a/emgauwa-controller/src/settings.rs b/emgauwa-controller/src/settings.rs
index a2b6ead..c05d8b6 100644
--- a/emgauwa-controller/src/settings.rs
+++ b/emgauwa-controller/src/settings.rs
@@ -1,6 +1,15 @@
 use config::Config;
+use emgauwa_lib::constants;
 use serde_derive::Deserialize;
 
+#[derive(Clone, Debug, Deserialize)]
+#[serde(default)]
+#[allow(unused)]
+pub struct Core {
+	pub host: String,
+	pub port: u16,
+}
+
 #[derive(Clone, Debug, Deserialize)]
 #[serde(default)]
 #[allow(unused)]
@@ -14,8 +23,6 @@ pub struct Logging {
 #[allow(unused)]
 pub struct Settings {
 	pub database: String,
-	pub port: u16,
-	pub host: String,
 	pub logging: Logging,
 }
 
@@ -23,13 +30,20 @@ impl Default for Settings {
 	fn default() -> Self {
 		Settings {
 			database: String::from("sqlite://emgauwa-controller.sqlite"),
-			port: 5000,
-			host: String::from("127.0.0.1"),
 			logging: Logging::default(),
 		}
 	}
 }
 
+impl Default for Core {
+	fn default() -> Self {
+		Core {
+			host: String::from("127.0.0.1"),
+			port: constants::DEFAULT_PORT,
+		}
+	}
+}
+
 impl Default for Logging {
 	fn default() -> Self {
 		Logging {
diff --git a/emgauwa-core.toml b/emgauwa-core.toml
index 2d0d9b2..b103fba 100644
--- a/emgauwa-core.toml
+++ b/emgauwa-core.toml
@@ -1,4 +1,4 @@
-port = 5000
+port = 4419
 host = "127.0.0.1"
 
 database = "sqlite://emgauwa-core.sqlite"
diff --git a/emgauwa-core/src/main.rs b/emgauwa-core/src/main.rs
index 352dcd6..f0a6864 100644
--- a/emgauwa-core/src/main.rs
+++ b/emgauwa-core/src/main.rs
@@ -23,6 +23,7 @@ async fn main() -> std::io::Result<()> {
 
 	let pool = emgauwa_lib::db::init(&settings.database).await;
 
+	log::info!("Starting server on {}:{}", settings.host, settings.port);
 	HttpServer::new(move || {
 		App::new()
 			.wrap(
diff --git a/emgauwa-core/src/settings.rs b/emgauwa-core/src/settings.rs
index 44b29db..ea0ccb0 100644
--- a/emgauwa-core/src/settings.rs
+++ b/emgauwa-core/src/settings.rs
@@ -1,4 +1,5 @@
 use config::Config;
+use emgauwa_lib::constants;
 use serde_derive::Deserialize;
 
 #[derive(Clone, Debug, Deserialize)]
@@ -23,7 +24,7 @@ impl Default for Settings {
 	fn default() -> Self {
 		Settings {
 			database: String::from("sqlite://emgauwa-core.sqlite"),
-			port: 5000,
+			port: constants::DEFAULT_PORT,
 			host: String::from("127.0.0.1"),
 			logging: Logging::default(),
 		}
@@ -44,11 +45,11 @@ pub fn init() -> Settings {
 		.add_source(config::File::with_name("emgauwa-core"))
 		.add_source(
 			config::Environment::with_prefix("EMGAUWA_CORE")
-				.prefix_separator("_")
+				.prefix_separator("__")
 				.separator("__"),
 		)
 		.build()
 		.unwrap()
 		.try_deserialize::<Settings>()
-		.unwrap_or_else(|_| panic!("Error reading settings."))
+		.expect("Error reading settings.")
 }
diff --git a/emgauwa-lib/src/constants.rs b/emgauwa-lib/src/constants.rs
new file mode 100644
index 0000000..649705b
--- /dev/null
+++ b/emgauwa-lib/src/constants.rs
@@ -0,0 +1 @@
+pub const DEFAULT_PORT: u16 = 4419;
diff --git a/emgauwa-lib/src/lib.rs b/emgauwa-lib/src/lib.rs
index fc678b3..0de9d46 100644
--- a/emgauwa-lib/src/lib.rs
+++ b/emgauwa-lib/src/lib.rs
@@ -1,3 +1,4 @@
+pub mod constants;
 pub mod db;
 pub mod handlers;
 pub mod return_models;