diff --git a/server/server.js b/server/server.js
index 8004cd548..29b7fbe27 100644
--- a/server/server.js
+++ b/server/server.js
@@ -98,23 +98,22 @@ console.info("Version: " + checkVersion.version);
 
 // If host is omitted, the server will accept connections on the unspecified IPv6 address (::) when IPv6 is available and the unspecified IPv4 address (0.0.0.0) otherwise.
 // Dual-stack support for (::)
-let hostname = process.env.UPTIME_KUMA_HOST || args.host;
-
 // Also read HOST if not FreeBSD, as HOST is a system environment variable in FreeBSD
-if (!hostname && !FBSD) {
-    hostname = process.env.HOST;
-}
+let hostEnv = FBSD ? null : process.env.HOST;
+let hostname = args.host || process.env.UPTIME_KUMA_HOST || hostEnv;
 
 if (hostname) {
     console.log("Custom hostname: " + hostname);
 }
 
-const port = parseInt(process.env.UPTIME_KUMA_PORT || process.env.PORT || args.port || 3001);
+const port = [args.port, process.env.UPTIME_KUMA_PORT, process.env.PORT, 3001]
+    .map(portValue => parseInt(portValue))
+    .find(portValue => !isNaN(portValue));
 
 // SSL
-const sslKey = process.env.UPTIME_KUMA_SSL_KEY || process.env.SSL_KEY || args["ssl-key"] || undefined;
-const sslCert = process.env.UPTIME_KUMA_SSL_CERT || process.env.SSL_CERT || args["ssl-cert"] || undefined;
-const disableFrameSameOrigin = !!process.env.UPTIME_KUMA_DISABLE_FRAME_SAMEORIGIN || args["disable-frame-sameorigin"] || false;
+const sslKey = args["ssl-key"] || process.env.UPTIME_KUMA_SSL_KEY || process.env.SSL_KEY || undefined;
+const sslCert = args["ssl-cert"] || process.env.UPTIME_KUMA_SSL_CERT || process.env.SSL_CERT || undefined;
+const disableFrameSameOrigin = args["disable-frame-sameorigin"] || !!process.env.UPTIME_KUMA_DISABLE_FRAME_SAMEORIGIN || false;
 const cloudflaredToken = args["cloudflared-token"] || process.env.UPTIME_KUMA_CLOUDFLARED_TOKEN || undefined;
 
 // 2FA / notp verification defaults