diff --git a/packages/core/src/network.js b/packages/core/src/network.js
index b07bbb879..dd223c04c 100644
--- a/packages/core/src/network.js
+++ b/packages/core/src/network.js
@@ -1,7 +1,7 @@
-import mime from 'mime-types';
-import logger from '@percy/logger';
 import { request as makeRequest } from '@percy/client/utils';
-import { normalizeURL, hostnameMatches, createResource, waitFor } from './utils.js';
+import logger from '@percy/logger';
+import mime from 'mime-types';
+import { createResource, hostnameMatches, normalizeURL, waitFor } from './utils.js';
 
 const MAX_RESOURCE_SIZE = 25 * (1024 ** 2); // 25MB
 const ALLOWED_STATUSES = [200, 201, 301, 302, 304, 307, 308];
@@ -397,7 +397,10 @@ async function saveResponseResource(network, request) {
         return log.debug(`- Skipping disallowed resource type [${request.type}]`, meta);
       }
 
-      let detectedMime = mime.lookup(response.url);
+      // mime package does not handle query params
+      let urlObj = new URL(url);
+      let urlWithoutSearchParams = urlObj.origin + urlObj.pathname;
+      let detectedMime = mime.lookup(urlWithoutSearchParams);
       let mimeType = (
         // ensure the mimetype is correct for text/plain responses
         response.mimeType === 'text/plain' && detectedMime
diff --git a/packages/core/test/discovery.test.js b/packages/core/test/discovery.test.js
index 491a8fd4d..b3d3bbe63 100644
--- a/packages/core/test/discovery.test.js
+++ b/packages/core/test/discovery.test.js
@@ -384,11 +384,11 @@ describe('Discovery', () => {
     it('fetches font file correctly with makeDirect', async () => {
       // add font to page via stylesheet
       server.reply('/style.css', () => [200, 'text/css', [
-        '@font-face { font-family: "test"; src: url("/font.woff") format("woff"); }',
+        '@font-face { font-family: "test"; src: url("/font.woff?abc=1") format("woff"); }',
         'body { font-family: "test", "sans-serif"; }'
       ].join('')]);
 
-      server.reply('/font.woff', () => {
+      server.reply('/font.woff?abc=1', () => {
         return [200, 'application/octate-stream', '<font>'];
       });
 
@@ -401,17 +401,17 @@ describe('Discovery', () => {
       await percy.idle();
       // confirm that request was made 2 times, once via browser and once due to makeDirectRequest
       let paths = server.requests.map(r => r[0]);
-      expect(paths.filter(x => x === '/font.woff').length).toEqual(2);
+      expect(paths.filter(x => x === '/font.woff?abc=1').length).toEqual(2);
 
       let requestData = captured[0].map((x) => x.attributes)
-        .filter(x => x['resource-url'] === 'http://localhost:8000/font.woff')[0];
+        .filter(x => x['resource-url'] === 'http://localhost:8000/font.woff?abc=1')[0];
 
       // confirm that original response mimetype is not tampered
       expect(requestData.mimetype).toEqual('application/octate-stream');
     });
   });
 
-  it('does not mimetype parse resourced with no file extension', async () => {
+  it('does not mimetype parse resource with no file extension', async () => {
     let brokeDOM = testDOM.replace('style.css', 'broken-css');
     server.reply('/broken-css', () => [200, 'text/plain', testCSS]);
     percy.loglevel('debug');
diff --git a/packages/core/test/helpers/server.js b/packages/core/test/helpers/server.js
index 05a1b5c4b..9064f0a33 100644
--- a/packages/core/test/helpers/server.js
+++ b/packages/core/test/helpers/server.js
@@ -22,7 +22,7 @@ export function createTestServer({ default: defaultReply, ...replies }, port = 8
     let pathname = req.url.pathname;
     if (req.url.search) pathname += req.url.search;
     server.requests.push(req.body ? [pathname, req.body] : [pathname]);
-    let reply = replies[req.url.pathname] || defaultReply;
+    let reply = replies[pathname] || defaultReply;
     return reply ? await reply(req, res) : next();
   });