diff --git a/flow-typed/qs.js b/flow-typed/qs.js
deleted file mode 100644
index eb06ded2..00000000
--- a/flow-typed/qs.js
+++ /dev/null
@@ -1,5 +0,0 @@
-declare module 'qs' {
-  declare module.exports: {
-    parse: (str: string, opts: Object) => Object,
-  };
-}
diff --git a/package.json b/package.json
index 9752705e..dbb60bb2 100644
--- a/package.json
+++ b/package.json
@@ -50,7 +50,6 @@
     "glamor": "^2.20.40",
     "hex2rgba": "^0.0.1",
     "prettier": "^1.7.4",
-    "qs": "^6.5.1",
     "remarkable": "^1.7.1",
     "request-promise": "^4.2.2",
     "rimraf": "^2.6.1",
diff --git a/src/components/ErrorDecoder/ErrorDecoder.js b/src/components/ErrorDecoder/ErrorDecoder.js
index a53cfbe9..51f2d8c3 100644
--- a/src/components/ErrorDecoder/ErrorDecoder.js
+++ b/src/components/ErrorDecoder/ErrorDecoder.js
@@ -8,7 +8,6 @@
 'use strict';
 
 import React from 'react';
-import qs from 'qs';
 
 import type {Node} from 'react';
 
@@ -44,14 +43,25 @@ function urlify(str: string): Node {
 function parseQueryString(
   search: string,
 ): ?{|code: string, args: Array<string>|} {
-  const qsResult = qs.parse(search, {ignoreQueryPrefix: true});
-  if (!qsResult.invariant) {
+  const rawQueryString = search.substring(1);
+  if (!rawQueryString) {
     return null;
   }
-  return {
-    code: qsResult.invariant,
-    args: qsResult.args || [],
-  };
+
+  let code = '';
+  let args = [];
+
+  const queries = rawQueryString.split('&');
+  for (let i = 0; i < queries.length; i++) {
+    const query = decodeURIComponent(queries[i]);
+    if (query.indexOf('invariant=') === 0) {
+      code = query.slice(10);
+    } else if (query.indexOf('args[') === 0) {
+      args.push(query.slice(query.indexOf(']=') + 2));
+    }
+  }
+
+  return {args, code};
 }
 
 function ErrorResult(props: {|code: ?string, msg: string|}) {
diff --git a/yarn.lock b/yarn.lock
index 15973cef..826da445 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -7688,10 +7688,6 @@ qs@6.4.0, qs@~6.4.0:
   version "6.4.0"
   resolved "https://registry.yarnpkg.com/qs/-/qs-6.4.0.tgz#13e26d28ad6b0ffaa91312cd3bf708ed351e7233"
 
-qs@^6.5.1:
-  version "6.5.1"
-  resolved "https://registry.yarnpkg.com/qs/-/qs-6.5.1.tgz#349cdf6eef89ec45c12d7d5eb3fc0c870343a6d8"
-
 query-string@^4.1.0:
   version "4.3.4"
   resolved "https://registry.yarnpkg.com/query-string/-/query-string-4.3.4.tgz#bbb693b9ca915c232515b228b1a02b609043dbeb"