diff --git a/src/backend/Logger.ts b/src/backend/Logger.ts
index 3cb26270..19a72cc5 100644
--- a/src/backend/Logger.ts
+++ b/src/backend/Logger.ts
@@ -1,7 +1,6 @@
 import {Config} from '../common/config/private/Config';
 import {LogLevel} from '../common/config/private/PrivateConfig';
 
-export type logFN = (...args: (string | number | (() => string))[]) => void;
 
 const forcedDebug = process.env['NODE_ENV'] === 'debug';
 
@@ -11,7 +10,8 @@ if (forcedDebug === true) {
   );
 }
 
-export type LoggerArgs = (string | number | (() => string))
+// Match `console.log` inputs
+export type LoggerArgs = Parameters<Console["log"]>[0]
 export type LoggerFunction = (...args: LoggerArgs[]) => void;
 
 export interface ILogger {
diff --git a/src/backend/routes/LoggerRouter.ts b/src/backend/routes/LoggerRouter.ts
index 896d9422..e58a48c1 100644
--- a/src/backend/routes/LoggerRouter.ts
+++ b/src/backend/routes/LoggerRouter.ts
@@ -1,5 +1,5 @@
 import {Express, NextFunction, Request, Response} from 'express';
-import {logFN, Logger} from '../Logger';
+import {LoggerFunction, Logger} from '../Logger';
 import {Config} from '../../common/config/private/Config';
 
 declare global {
@@ -16,7 +16,7 @@ declare global {
  * Adds logging to express
  */
 export class LoggerRouter {
-  public static log(loggerFn: logFN, req: Request, res: Response): void {
+  public static log(loggerFn: LoggerFunction, req: Request, res: Response): void {
     if (req.logged === true) {
       return;
     }