diff --git a/files/routes/settings.py b/files/routes/settings.py
index 77749d2b5..8310322e8 100644
--- a/files/routes/settings.py
+++ b/files/routes/settings.py
@@ -97,7 +97,10 @@ def settings_profile_post(v):
 		bio = bio.replace("\n", "\n\n").replace("\n\n\n\n\n\n", "\n\n").replace("\n\n\n\n", "\n\n").replace("\n\n\n", "\n\n")
 		with CustomRenderer() as renderer: bio_html = renderer.render(mistletoe.Document(bio))
 		bio_html = sanitize(bio_html)
-
+		if len(bio_html) > 10000:
+			return render_template("settings_profile.html",
+								   v=v,
+								   error="Your bio is too long")
 		# Run safety filter
 		bans = filter_comment_html(bio_html)