diff --git a/web/src/i18n.ts b/web/src/i18n.ts
index f528aaf87e..090f5cbb41 100644
--- a/web/src/i18n.ts
+++ b/web/src/i18n.ts
@@ -5,6 +5,7 @@ import type {MessageDescriptor} from "@formatjs/intl";
 import {DEFAULT_INTL_CONFIG, IntlErrorCode, createIntl, createIntlCache} from "@formatjs/intl";
 import type {FormatXMLElementFn, PrimitiveType} from "intl-messageformat";
 import _ from "lodash";
+import assert from "minimalistic-assert";
 
 import {page_params} from "./base_page_params";
 
@@ -53,13 +54,9 @@ export function $t_html(
 export let language_list: (typeof page_params & {page_type: "home"})["language_list"];
 
 export function get_language_name(language_code: string): string {
-    const language_list_map: Record<string, string> = {};
-
-    // One-to-one mapping from code to name for all languages
-    for (const language of language_list) {
-        language_list_map[language.code] = language.name;
-    }
-    return language_list_map[language_code];
+    const language = language_list.find((language) => language.code === language_code);
+    assert(language !== undefined);
+    return language.name;
 }
 
 export function initialize(language_params: {language_list: typeof language_list}): void {