diff --git a/neutron/db/migration/alembic_migrations/env.py b/neutron/db/migration/alembic_migrations/env.py
index 98c2678ea1..9866068b35 100644
--- a/neutron/db/migration/alembic_migrations/env.py
+++ b/neutron/db/migration/alembic_migrations/env.py
@@ -22,8 +22,8 @@ from oslo.db.sqlalchemy import session
 import sqlalchemy as sa
 from sqlalchemy import event
 
+from neutron.db.migration.models import head  # noqa
 from neutron.db import model_base
-from neutron.openstack.common import importutils
 
 
 MYSQL_ENGINE = None
@@ -41,9 +41,6 @@ plugin_class_path = neutron_config.core_plugin
 active_plugins = [plugin_class_path]
 active_plugins += neutron_config.service_plugins
 
-for class_path in active_plugins:
-    importutils.import_class(class_path)
-
 # set the target for 'autogenerate' support
 target_metadata = model_base.BASEV2.metadata
 
diff --git a/neutron/db/migration/alembic_migrations/script.py.mako b/neutron/db/migration/alembic_migrations/script.py.mako
index eb3dc9e027..e31a2719e2 100644
--- a/neutron/db/migration/alembic_migrations/script.py.mako
+++ b/neutron/db/migration/alembic_migrations/script.py.mako
@@ -25,28 +25,14 @@ Create Date: ${create_date}
 revision = ${repr(up_revision)}
 down_revision = ${repr(down_revision)}
 
-# Change to ['*'] if this migration applies to all plugins
-
-migration_for_plugins = [
-    '${config.neutron_config.core_plugin}'
-]
-
 from alembic import op
 import sqlalchemy as sa
 ${imports if imports else ""}
 
-from neutron.db import migration
-
 
 def upgrade(active_plugins=None, options=None):
-    if not migration.should_run(active_plugins, migration_for_plugins):
-        return
-
     ${upgrades if upgrades else "pass"}
 
 
 def downgrade(active_plugins=None, options=None):
-    if not migration.should_run(active_plugins, migration_for_plugins):
-        return
-
     ${downgrades if downgrades else "pass"}
diff --git a/neutron/db/migration/alembic_migrations/versions/3b85b693a95f_remove_service_tables.py b/neutron/db/migration/alembic_migrations/versions/3b85b693a95f_remove_service_tables.py
new file mode 100644
index 0000000000..a0fc50d6cd
--- /dev/null
+++ b/neutron/db/migration/alembic_migrations/versions/3b85b693a95f_remove_service_tables.py
@@ -0,0 +1,45 @@
+# Copyright 2014 OpenStack Foundation
+#
+#    Licensed under the Apache License, Version 2.0 (the "License"); you may
+#    not use this file except in compliance with the License. You may obtain
+#    a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+#    Unless required by applicable law or agreed to in writing, software
+#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+#    License for the specific language governing permissions and limitations
+#    under the License.
+#
+
+"""Drop unused servicedefinitions and servicetypes tables.
+
+These tables are created independently on plugins but only dropped if
+LoadBalancer plugin is used. Meaning that if LoadBalancer plugin is not set
+then these tables were created and never used.
+
+Revision ID: 3b85b693a95f
+Revises: 327ee5fde2c7
+Create Date: 2014-07-22 03:30:05.837152
+
+"""
+
+# revision identifiers, used by Alembic.
+revision = '3b85b693a95f'
+down_revision = '327ee5fde2c7'
+
+from alembic import op
+
+
+def upgrade(active_plugins=None, options=None):
+    for table in ('servicedefinitions', 'servicetypes'):
+        op.execute("DROP TABLE IF EXISTS %s" % table)
+
+
+def downgrade(active_plugins=None, options=None):
+    """Don't create the tables
+
+    These tables would be created during downgrade at correct place in
+    migration timeline at revision 557edfc53098.
+    """
diff --git a/neutron/db/migration/alembic_migrations/versions/HEAD b/neutron/db/migration/alembic_migrations/versions/HEAD
index 86f1f1dcbe..7c2f9210a5 100644
--- a/neutron/db/migration/alembic_migrations/versions/HEAD
+++ b/neutron/db/migration/alembic_migrations/versions/HEAD
@@ -1 +1 @@
-327ee5fde2c7
+3b85b693a95f