diff --git a/django/core/management.py b/django/core/management.py
index 93b1c7b5b5..38d46e864d 100644
--- a/django/core/management.py
+++ b/django/core/management.py
@@ -760,7 +760,7 @@ def inspectdb():
             # table description.
             if row[6]: # If it's NULL...
                 extra_params['blank'] = True
-                if not field_type in ('TextField', 'CharField'):
+                if not field_type in ('TextField(', 'CharField('):
                     extra_params['null'] = True
 
             field_desc = '%s = models.%s' % (att_name, field_type)