diff --git a/base_usability/models/__init__.py b/base_usability/models/__init__.py
index d522841..c4d8b8b 100644
--- a/base_usability/models/__init__.py
+++ b/base_usability/models/__init__.py
@@ -3,4 +3,3 @@ from . import partner
 from . import company
 from . import mail
 from . import misc
-from . import report_sxw
diff --git a/base_usability/models/misc.py b/base_usability/models/misc.py
index 11ef333..53c1968 100644
--- a/base_usability/models/misc.py
+++ b/base_usability/models/misc.py
@@ -1,7 +1,9 @@
 # © 2015-2016 Akretion (Alexis de Lattre <alexis.delattre@akretion.com>)
 # License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).
 
-from odoo import models, fields
+from odoo import models, fields, api
+from odoo.tools import misc
+from odoo.tools import float_compare
 
 
 class BaseLanguageExport(models.TransientModel):
@@ -15,3 +17,32 @@ class BaseLanguageInstall(models.TransientModel):
     _inherit = 'base.language.install'
 
     overwrite = fields.Boolean(default=True)
+
+
+class BaseUsabilityInstalled(models.AbstractModel):
+    _name = "base.usability.installed"
+    _description = "technical flag to see if base_usability module is installed"
+
+
+formatLang_original = misc.formatLang
+
+def formatLang(self, value, digits=None, grouping=True, monetary=False,
+               dp=False, currency_obj=False, int_no_digits=True):
+    with api.Environment.manage():
+        env = api.Environment(self.cr, self.uid, {})
+        if (
+                'base.usability.installed' in env and
+                int_no_digits and
+                not monetary and
+                isinstance(value, float) and
+                dp):
+            prec = env['decimal.precision'].precision_get(dp)
+            if not float_compare(value, int(value), precision_digits=prec):
+                digits = 0
+                dp = False
+    res = formatLang_original(
+        self, value, digits=digits, grouping=grouping, monetary=monetary,
+        dp=dp, currency_obj=currency_obj)
+    return res
+
+misc.formatLang = formatLang
diff --git a/base_usability/models/report_sxw.py b/base_usability/models/report_sxw.py
deleted file mode 100644
index 64e2bd1..0000000
--- a/base_usability/models/report_sxw.py
+++ /dev/null
@@ -1,35 +0,0 @@
-# © 2016 Akretion (Alexis de Lattre <alexis.delattre@akretion.com>)
-# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).
-
-from odoo import models, api
-from odoo.tools import misc
-from odoo.tools import float_compare
-
-
-class BaseUsabilityInstalled(models.AbstractModel):
-    _name = "base.usability.installed"
-
-
-formatLang_original = misc.formatLang
-
-def formatLang(self, value, digits=None, grouping=True, monetary=False,
-               dp=False, currency_obj=False, int_no_digits=True):
-    with api.Environment.manage():
-        env = api.Environment(self.cr, self.uid, {})
-        if (
-                'base.usability.installed' in env and
-                int_no_digits and
-                not monetary and
-                isinstance(value, float) and
-                dp):
-            prec = env['decimal.precision'].precision_get(dp)
-            if not float_compare(value, int(value), precision_digits=prec):
-                digits = 0
-                dp = False
-    res = formatLang_original(
-        self, value, digits=digits, grouping=grouping, monetary=monetary,
-        dp=dp, currency_obj=currency_obj)
-    return res
-
-
-misc.formatLang = formatLang