diff --git a/account_tax_balance/hooks.py b/account_tax_balance/hooks.py
index 1fafad71..bdc693a5 100644
--- a/account_tax_balance/hooks.py
+++ b/account_tax_balance/hooks.py
@@ -7,11 +7,11 @@ from psycopg2 import sql
 
 
 def pre_init_hook(cr):
-    """ Precreate move_type and fill with appropriate values to prevent
+    """Precreate move_type and fill with appropriate values to prevent
     a MemoryError when the ORM attempts to call its compute method on a large
     amount of preexisting moves. Note that the order of the mapping is
     important as one move can have move lines on accounts of multiple types
-    and the move type is set in the order of precedence. """
+    and the move type is set in the order of precedence."""
     logger = logging.getLogger(__name__)
     logger.info("Add account_move.move_type column if it does not yet exist")
     cr.execute("ALTER TABLE account_move ADD COLUMN IF NOT EXISTS move_type VARCHAR")
diff --git a/account_tax_balance/models/account_tax.py b/account_tax_balance/models/account_tax.py
index a2560e6f..243bf65e 100644
--- a/account_tax_balance/models/account_tax.py
+++ b/account_tax_balance/models/account_tax.py
@@ -35,7 +35,7 @@ class AccountTax(models.Model):
         )
 
     def _account_tax_ids_with_moves(self):
-        """ Return all account.tax ids for which there is at least
+        """Return all account.tax ids for which there is at least
         one account.move.line in the context period
         for the user company.
 
diff --git a/account_tax_balance/wizard/open_tax_balances_view.xml b/account_tax_balance/wizard/open_tax_balances_view.xml
index e3ba2373..61894ff7 100644
--- a/account_tax_balance/wizard/open_tax_balances_view.xml
+++ b/account_tax_balance/wizard/open_tax_balances_view.xml
@@ -18,15 +18,15 @@
                     <field name="target_move" />
                 </group>
                 <footer>
-                <button
+                    <button
                         string="Open Taxes"
                         name="open_taxes"
                         type="object"
                         class="oe_highlight"
                     />
-                or
-                <button string="Cancel" class="oe_link" special="cancel" />
-            </footer>
+                    or
+                    <button string="Cancel" class="oe_link" special="cancel" />
+                </footer>
             </form>
         </field>
     </record>