diff --git a/server.js b/server.js
index e79e6d2..3c2f1b3 100644
--- a/server.js
+++ b/server.js
@@ -75,7 +75,9 @@ app.get('/:owner/:repo/issue/:num', async function (req, res) {
 			req.params.owner
 		)}/${encodeURIComponent(req.params.repo)}/languages`
 	)
-	languages = getLanguagePercentages(await languagesResp.json())
+	if (languagesResp.ok) {
+		languages = getLanguagePercentages(await languagesResp.json())
+	}
 	const html = await eta.renderAsync('issue', {
 		issue,
 		languages,