diff --git a/apps/server/src/services/code_block_theme.spec.ts b/apps/server/src/services/code_block_theme.spec.ts
index 84482b416..3a255ff29 100644
--- a/apps/server/src/services/code_block_theme.spec.ts
+++ b/apps/server/src/services/code_block_theme.spec.ts
@@ -1,11 +1,12 @@
 import { describe, expect, it } from "vitest";
-import { getStylesDirectory, readThemesFromFileSystem } from "./code_block_theme.js";
+import { readThemesFromFileSystem } from "./code_block_theme.js";
 
 import themeNames from "./code_block_theme_names.json" with { type: "json" };
+import path = require("path");
 
 describe("Code block theme", () => {
     it("all themes are mapped", () => {
-        const themes = readThemesFromFileSystem(getStylesDirectory());
+        const themes = readThemesFromFileSystem(path.join(__dirname, "../../node_modules/@highlightjs/cdn-assets/styles"));
 
         const mappedThemeNames = new Set(Object.values(themeNames));
         const unmappedThemeNames = new Set<string>();
diff --git a/apps/server/src/services/code_block_theme.ts b/apps/server/src/services/code_block_theme.ts
index bb0a14921..14b9ce57a 100644
--- a/apps/server/src/services/code_block_theme.ts
+++ b/apps/server/src/services/code_block_theme.ts
@@ -30,7 +30,7 @@ interface ColorTheme {
  * @returns the supported themes, grouped.
  */
 export function listSyntaxHighlightingThemes() {
-    const path = join(getResourceDir(), getStylesDirectory());
+    const path = getStylesDirectory();
     const systemThemes = readThemesFromFileSystem(path);
 
     return {
@@ -46,11 +46,11 @@ export function listSyntaxHighlightingThemes() {
 
 export function getStylesDirectory() {
     if (isElectron && !isDev) {
-        return "styles";
+        return join(getResourceDir(), "styles");
     } else if (!isDev) {
-        return "node_modules/@highlightjs/cdn-assets/styles";
+        return join(getResourceDir(), "node_modules/@highlightjs/cdn-assets/styles");
     } else {
-        return join(__dirname, "../../node_modules/@highlightjs/cdn-assets/styles");
+        return join(__dirname, "../node_modules/@highlightjs/cdn-assets/styles");
     }
 }