diff --git a/apps/server/src/services/i18n.spec.ts b/apps/server/src/services/i18n.spec.ts
index c57537d138..e9be7efc81 100644
--- a/apps/server/src/services/i18n.spec.ts
+++ b/apps/server/src/services/i18n.spec.ts
@@ -1,6 +1,8 @@
 import { LOCALES } from "@triliumnext/commons";
 import { readFileSync } from "fs";
 import { join } from "path";
+// eslint-disable-next-line @typescript-eslint/no-require-imports
+const { languages } = require("tesseract.js");
 import { describe, expect, it } from "vitest";
 
 describe("i18n", () => {
@@ -16,4 +18,17 @@ describe("i18n", () => {
                 .not.toThrow();
         }
     });
+
+    it("all tesseractCode values are supported by Tesseract.js", () => {
+        const supportedCodes = new Set(Object.keys(languages).map((k) => k.toLowerCase()));
+
+        for (const locale of LOCALES) {
+            if (!locale.tesseractCode) {
+                continue;
+            }
+
+            expect(supportedCodes, `Locale '${locale.id}' has unsupported tesseractCode '${locale.tesseractCode}'`)
+                .toContain(locale.tesseractCode);
+        }
+    });
 });