diff --git a/packages/server/src/cli.ts b/packages/server/src/cli.ts
index 629a961d97cb..eed975ff5ff4 100644
--- a/packages/server/src/cli.ts
+++ b/packages/server/src/cli.ts
@@ -273,6 +273,7 @@ const bold = (text: string | number): string | number => {
 			},
 		},
 		password,
+		port,
 		httpsOptions: hasCustomHttps ? {
 			key: certKeyData,
 			cert: certData,
diff --git a/packages/server/src/server.ts b/packages/server/src/server.ts
index b7d9a12cdbee..2c744da844c7 100644
--- a/packages/server/src/server.ts
+++ b/packages/server/src/server.ts
@@ -28,6 +28,7 @@ interface CreateAppOptions {
 	registerMiddleware?: (app: express.Application) => void;
 	serverOptions?: ServerOptions;
 	password?: string;
+	port?: number;
 	httpsOptions?: https.ServerOptions;
 	allowHttp?: boolean;
 	bypassAuth?: boolean;
@@ -197,6 +198,12 @@ export const createApp = async (options: CreateAppOptions): Promise<{
 	): void => {
 		const currentUrl = `${protocol}://${req.headers.host}${req.originalUrl}`;
 		const newUrl = url.parse(currentUrl);
+		if (newUrl.port == null && protocol === "https" && options.port === 80) {
+			// Fix for https redirect on default port. The redirect would go to a URL without a port, so the
+			// browser would assume that it's redirecting to port 443.
+			newUrl.host += `:${options.port}`;
+			newUrl.port = "" + options.port;
+		}
 		if (from && newUrl.pathname) {
 			newUrl.pathname = newUrl.pathname.replace(new RegExp(`\/${from}\/?$`), "/");
 		}