diff --git a/app/models.py b/app/models.py
index 733dbd8..d2ad101 100644
--- a/app/models.py
+++ b/app/models.py
@@ -1137,7 +1137,7 @@ class Server(object):
 class History(db.Model):
     id = db.Column(db.Integer, primary_key = True)
     msg = db.Column(db.String(256))
-    detail = db.Column(db.Text())
+    detail = db.Column(db.Text().with_variant(db.Text(length=2**24-2), 'mysql'))
     created_by = db.Column(db.String(128))
     created_on = db.Column(db.DateTime, default=datetime.utcnow)