diff --git a/alembic/env.py b/alembic/env.py
index 7316abc0..60b76176 100644
--- a/alembic/env.py
+++ b/alembic/env.py
@@ -77,7 +77,9 @@ def run_migrations_online():
 
     with connectable.connect() as connection:
         context.configure(
-            connection=connection, target_metadata=target_metadata
+            connection=connection,
+            target_metadata=target_metadata,
+            render_as_batch=config.get_main_option('sqlalchemy.url').startswith('sqlite:///')
         )
 
         with context.begin_transaction():
diff --git a/alembic/versions/130b5c2275d8_update_ip_token_association.py b/alembic/versions/130b5c2275d8_update_ip_token_association.py
new file mode 100644
index 00000000..68dc39a8
--- /dev/null
+++ b/alembic/versions/130b5c2275d8_update_ip_token_association.py
@@ -0,0 +1,69 @@
+'''update ip token association
+
+Revision ID: 130b5c2275d8
+Revises: 140a25d5f185
+Create Date: 2021-07-10 20:40:46.937634
+
+'''
+from alembic import op
+import sqlalchemy as sa
+from sqlalchemy import Table, Column, Integer, String, ForeignKey
+from sqlalchemy.engine.reflection import Inspector
+from flask_sqlalchemy import SQLAlchemy
+
+# revision identifiers, used by Alembic.
+revision = '130b5c2275d8'
+down_revision = '140a25d5f185'
+branch_labels = None
+depends_on = None
+
+db = SQLAlchemy()
+conn = op.get_bind()
+
+def upgrade():
+        ips = conn.execute('select id, address from ips').fetchall()
+        associations = conn.execute('select ips, tokens from association').fetchall()
+
+        final_associations = []
+        for association in associations:
+            association_ip, association_token = association
+            for ip in ips:
+                id, ip_address = ip
+                if ip_address == association_ip:
+                    final_associations.append({'ips': id, 'tokens': association_token})
+
+        op.drop_table('association')
+
+        association = op.create_table(
+            'association', db.Model.metadata,
+                Column('ips', Integer, ForeignKey('ips.id'), primary_key=True),
+                Column('tokens', String(255), ForeignKey('tokens.name'), primary_key=True)
+        )   
+
+
+        op.bulk_insert(association, final_associations)
+
+        
+
+def downgrade():
+    ips = conn.execute('select id, address from ips').fetchall()
+    associations = conn.execute('select ips, tokens from association').fetchall()
+
+    final_associations = []
+    for association in associations:
+        association_ip, association_token = association
+        for ip in ips:
+            id, ip_address = ip
+            if id == association_ip:
+                final_associations.append({'ips': ip_address, 'tokens': association_token})
+
+    op.drop_table('association')
+
+    association = op.create_table(
+        'association', db.Model.metadata,
+            Column('ips', String(255), ForeignKey('ips.address'), primary_key=True),
+            Column('tokens', String(255), ForeignKey('tokens.name'), primary_key=True)
+    )   
+
+
+    op.bulk_insert(association, final_associations)
diff --git a/alembic/versions/140a25d5f185_create_tokens_table.py b/alembic/versions/140a25d5f185_create_tokens_table.py
index 8c57b3ac..a70a7760 100644
--- a/alembic/versions/140a25d5f185_create_tokens_table.py
+++ b/alembic/versions/140a25d5f185_create_tokens_table.py
@@ -44,13 +44,16 @@ def upgrade():
             sa.Column('ips', Integer, ForeignKey('association.id'))
         )
     else:
-        with op.batch_alter_table('tokens') as batch_op:
-            batch_op.alter_column('ex_date', new_column_name='expiration_date', nullable=True)
-            batch_op.alter_column('one_time', new_column_name='max_usage')
+        try:
+            with op.batch_alter_table('tokens') as batch_op:
+                batch_op.alter_column('ex_date', new_column_name='expiration_date', nullable=True)
+                batch_op.alter_column('one_time', new_column_name='max_usage')
 
-            batch_op.add_column(
-                Column('disabled', Boolean, default=False)
-            )
+                batch_op.add_column(
+                    Column('disabled', Boolean, default=False)
+                )
+        except KeyError:
+            pass
 
 
     if 'association' not in tables:
diff --git a/matrix_registration/__init__.py b/matrix_registration/__init__.py
index a79778b1..ba59ad44 100644
--- a/matrix_registration/__init__.py
+++ b/matrix_registration/__init__.py
@@ -2,5 +2,5 @@
 from . import tokens
 from . import config
 
-__version__ = '1.0.0.dev4'
+__version__ = '1.0.0.dev5'
 name = 'matrix_registration'
diff --git a/matrix_registration/config.py b/matrix_registration/config.py
index 4d63ee9d..aa4610a6 100644
--- a/matrix_registration/config.py
+++ b/matrix_registration/config.py
@@ -138,7 +138,10 @@ def read_config(self, dictionary):
     def get_secrets(self):
         with open(f"{self.secrets_dir}/secrets") as file:
             for line in file:
-                k, v = line.split('=')
+                try:
+                    k, v = line.lower().split('=')
+                except NameError:
+                    logger.error(f'secret "{line}" in wrong format, please use "key=value"')  
                 setattr(self, k.strip(), v.strip())
 
 
diff --git a/matrix_registration/tokens.py b/matrix_registration/tokens.py
index 58fb2000..2f5eee18 100644
--- a/matrix_registration/tokens.py
+++ b/matrix_registration/tokens.py
@@ -27,8 +27,8 @@ def random_readable_string(length=3, wordlist=WORD_LIST_PATH):
 
 
 association_table = Table('association', db.Model.metadata,
-                          Column('ips', String, ForeignKey('ips.address'), primary_key=True),
-                          Column('tokens', Integer, ForeignKey('tokens.name'), primary_key=True))
+                          Column('ips', Integer, ForeignKey('ips.id'), primary_key=True),
+                          Column('tokens', String(255), ForeignKey('tokens.name'), primary_key=True))
 
 
 class IP(db.Model):
@@ -146,10 +146,7 @@ def use(self, token_name, ip_address=False):
         token = self.get_token(token_name)
         if token:
             if token.use(ip_address):
-                try:
-                    session.commit()
-                except exc.IntegrityError:
-                    logger.warning("User already used this token before!")
+                session.commit()
                 return True
         return False