diff --git a/lib/galaxy/webapps/tool_shed/model/migrate/versions/0005_drop_tool_related_tables.py b/lib/galaxy/webapps/tool_shed/model/migrate/versions/0005_drop_tool_related_tables.py
index 152653997aa..2d7e233b223 100644
--- a/lib/galaxy/webapps/tool_shed/model/migrate/versions/0005_drop_tool_related_tables.py
+++ b/lib/galaxy/webapps/tool_shed/model/migrate/versions/0005_drop_tool_related_tables.py
@@ -94,7 +94,7 @@ def upgrade(migrate_engine):
         Tool_table.drop()
     except Exception, e:
         log.debug( "Dropping tool table failed: %s" % str( e ) )
-def downgrade():
+def downgrade(migrate_engine):
     # Load existing tables
     metadata.bind = migrate_engine
     metadata.reflect()
diff --git a/lib/galaxy/webapps/tool_shed/model/migrate/versions/0018_add_repository_metadata_flag_columns.py b/lib/galaxy/webapps/tool_shed/model/migrate/versions/0018_add_repository_metadata_flag_columns.py
index 7085c87fab0..42ce9f2ddc0 100644
--- a/lib/galaxy/webapps/tool_shed/model/migrate/versions/0018_add_repository_metadata_flag_columns.py
+++ b/lib/galaxy/webapps/tool_shed/model/migrate/versions/0018_add_repository_metadata_flag_columns.py
@@ -64,7 +64,7 @@ def upgrade(migrate_engine):
         except Exception, e:
             print "Adding missing_test_components column to the repository_metadata table failed: %s" % str( e )
 
-def downgrade():
+def downgrade(migrate_engine):
     metadata.bind = migrate_engine
     metadata.reflect()
     # Drop missing_test_components and tool_test_results from the repository_metadata table and add tool_test_errors to the repository_metadata table.