diff --git a/scripts/tweetConstructor.js b/scripts/tweetConstructor.js
index c5e2f3f0..af7bddf2 100644
--- a/scripts/tweetConstructor.js
+++ b/scripts/tweetConstructor.js
@@ -669,7 +669,7 @@ async function constructTweet(t, tweetConstructorArgs, options = {}) {
     // Main text content
     const longShortClass =
         vars.noBigFont ||
-        t.full_text.length > 280 ||
+        (t.full_text?.length ?? 0) > 280 ||
         !options.bigFont ||
         (!options.mainTweet && location.pathname.includes("/status/"))
             ? "tweet-body-text-long"