diff --git a/superset/migrations/versions/ff40cbbdde10_.py b/superset/migrations/versions/ff40cbbdde10_.py
index e2cb0c96c3e1e..a026c9d52c56c 100644
--- a/superset/migrations/versions/ff40cbbdde10_.py
+++ b/superset/migrations/versions/ff40cbbdde10_.py
@@ -1,4 +1,4 @@
-"""empty message
+"""merge PandasConnector
 
 Revision ID: ff40cbbdde10
 Revises: ('a9c47e2c1547', 'b2cd059e8803')
@@ -8,7 +8,7 @@
 
 # revision identifiers, used by Alembic.
 revision = 'ff40cbbdde10'
-down_revision = ('a9c47e2c1547', 'b2cd059e8803')
+down_revision = ('f959a6652acd', 'b2cd059e8803')
 
 from alembic import op
 import sqlalchemy as sa