diff --git a/django/core/db/backends/mysql.py b/django/core/db/backends/mysql.py
index 4eb9708fc9..d6a2014d3e 100644
--- a/django/core/db/backends/mysql.py
+++ b/django/core/db/backends/mysql.py
@@ -133,7 +133,7 @@ DATA_TYPES = {
     'TimeField':         'time',
     'URLField':          'varchar(200)',
     'USStateField':      'varchar(2)',
-    'XMLField':          'text',
+    'XMLField':          'longtext',
 }
 
 DATA_TYPES_REVERSE = {