diff --git a/openlp/core/lib/db.py b/openlp/core/lib/db.py
index fb8a38b1f..7ad743235 100644
--- a/openlp/core/lib/db.py
+++ b/openlp/core/lib/db.py
@@ -73,6 +73,13 @@ def upgrade_db(url, upgrade):
         The python module that contains the upgrade instructions.
     """
     session, metadata = init_db(url)
+
+    class Metadata(BaseModel):
+        """
+        Provides a class for the metadata table.
+        """
+        pass
+
     tables = upgrade.upgrade_setup(metadata)
     metadata_table = Table(u'metadata', metadata,
         Column(u'key', types.Unicode(64), primary_key=True),
@@ -103,6 +110,7 @@ def upgrade_db(url, upgrade):
     session.commit()
     return int(version_meta.value), upgrade.__version__
 
+
 def delete_database(plugin_name, db_file_name=None):
     """
     Remove a database file from the system.
@@ -138,14 +146,6 @@ class BaseModel(object):
             instance.__setattr__(key, value)
         return instance
 
-
-class Metadata(BaseModel):
-    """
-    Provides a class for the metadata table.
-    """
-    pass
-
-
 class Manager(object):
     """
     Provide generic object persistence management