diff --git a/src/lib/geoip/client.ts b/src/lib/geoip/client.ts
index c0228281..95c6120a 100644
--- a/src/lib/geoip/client.ts
+++ b/src/lib/geoip/client.ts
@@ -2,7 +2,7 @@ import _ from 'lodash';
 import config from 'config';
 import newrelic from 'newrelic';
 import type { CacheInterface } from '../cache/cache-interface.js';
-import { InternalError } from '../internal-error.js';
+import { ProbeError } from '../probe-error.js';
 import type { ProbeLocation } from '../../probe/types.js';
 import RedisCache from '../cache/redis-cache.js';
 import { getRedisClient } from '../redis/client.js';
@@ -58,7 +58,7 @@ export default class GeoipClient {
 				);
 
 				if (ip2location.status === 'fulfilled' && ip2location.value.isProxy && !isAddrWhitelisted(addr)) {
-					throw new InternalError('vpn detected', true);
+					throw new ProbeError('vpn detected');
 				}
 
 				return fulfilled.filter(Boolean).flat();
@@ -67,14 +67,14 @@ export default class GeoipClient {
 		const resultsWithCities = results.filter(s => s.city);
 
 		if (resultsWithCities.length === 0 || (resultsWithCities.length === 1 && resultsWithCities[0]?.provider === 'fastly')) {
-			throw new InternalError(`unresolvable geoip: ${addr}`, true);
+			throw new ProbeError(`unresolvable geoip: ${addr}`);
 		}
 
 		const [ match, ranked ] = this.bestMatch('normalizedCity', results);
 		const networkMatch = this.matchNetwork(match, ranked);
 
 		if (!networkMatch) {
-			throw new InternalError(`unresolvable geoip: ${addr}`, true);
+			throw new ProbeError(`unresolvable geoip: ${addr}`);
 		}
 
 		const region = this.matchRegion(match);
diff --git a/src/lib/internal-error.ts b/src/lib/internal-error.ts
deleted file mode 100644
index 7210d745..00000000
--- a/src/lib/internal-error.ts
+++ /dev/null
@@ -1,9 +0,0 @@
-export class InternalError extends Error {
-	expose?: boolean;
-
-	constructor (message: string, isExposed: boolean) {
-		super(message);
-
-		this.expose = isExposed;
-	}
-}
diff --git a/src/lib/probe-error.ts b/src/lib/probe-error.ts
new file mode 100644
index 00000000..5c696a43
--- /dev/null
+++ b/src/lib/probe-error.ts
@@ -0,0 +1 @@
+export class ProbeError extends Error {}
diff --git a/src/lib/ws/helper/probe-ip-limit.ts b/src/lib/ws/helper/probe-ip-limit.ts
index 0f5f7746..a9cc27b7 100644
--- a/src/lib/ws/helper/probe-ip-limit.ts
+++ b/src/lib/ws/helper/probe-ip-limit.ts
@@ -1,6 +1,6 @@
 import { fetchSockets } from '../server.js';
 import { scopedLogger } from '../../logger.js';
-import { InternalError } from '../../internal-error.js';
+import { ProbeError } from '../../probe-error.js';
 import type { LRUOptions } from './throttle.js';
 
 const logger = scopedLogger('ws:limit');
@@ -22,6 +22,6 @@ export const verifyIpLimit = async (ip: string, socketId: string): Promise<void>
 
 	if (previousSocket) {
 		logger.info(`ws client ${socketId} has reached the concurrent IP limit.`, { message: previousSocket.data.probe.ipAddress });
-		throw new InternalError('ip limit', true);
+		throw new ProbeError('ip limit');
 	}
 };
diff --git a/src/lib/ws/middleware/probe-metadata.ts b/src/lib/ws/middleware/probe-metadata.ts
index de0fae47..b7f24268 100644
--- a/src/lib/ws/middleware/probe-metadata.ts
+++ b/src/lib/ws/middleware/probe-metadata.ts
@@ -2,7 +2,7 @@ import type { Socket } from 'socket.io';
 import type { ExtendedError } from 'socket.io/dist/namespace.js';
 import { WsError } from '../ws-error.js';
 import { buildProbe } from '../../../probe/builder.js';
-import { InternalError } from '../../internal-error.js';
+import { ProbeError } from '../../probe-error.js';
 import { errorHandler } from '../helper/error-handler.js';
 import { scopedLogger } from '../../logger.js';
 import getProbeIp from '../../get-probe-ip.js';
@@ -19,7 +19,7 @@ export const probeMetadata = errorHandler(async (socket: Socket, next: (error?:
 		logger.error(error);
 		let message = 'failed to collect probe metadata';
 
-		if (error instanceof InternalError && error?.expose) {
+		if (error instanceof ProbeError) {
 			message = error.message;
 		}
 
diff --git a/src/probe/builder.ts b/src/probe/builder.ts
index fe08ad2c..7b2f891b 100644
--- a/src/probe/builder.ts
+++ b/src/probe/builder.ts
@@ -11,7 +11,7 @@ import {
 	getContinentAliases,
 	getRegionAliases,
 } from '../lib/location/location.js';
-import { InternalError } from '../lib/internal-error.js';
+import { ProbeError } from '../lib/probe-error.js';
 import { createGeoipClient } from '../lib/geoip/client.js';
 import getProbeIp from '../lib/get-probe-ip.js';
 import { getRegion } from '../lib/ip-ranges.js';
@@ -35,7 +35,7 @@ export const buildProbe = async (socket: Socket): Promise<Probe> => {
 	}
 
 	if (!semver.satisfies(version, '>=0.9.0')) {
-		throw new InternalError(`invalid probe version (${version})`, true);
+		throw new ProbeError(`invalid probe version (${version})`);
 	}
 
 	let ipInfo;