diff --git a/base_fileurl_field/fields.py b/base_fileurl_field/fields.py
index 0d2b4b6..a71f80b 100644
--- a/base_fileurl_field/fields.py
+++ b/base_fileurl_field/fields.py
@@ -3,6 +3,7 @@
 import unicodedata
 
 from odoo import fields
+from odoo.tools import config
 
 
 fields.Field.__doc__ += """
@@ -35,6 +36,7 @@ class FileURL(fields.Binary):
         'filename': '',  # Field to use to store the filename on ir.attachment
     }
 
+    # pylint: disable=method-required-super
     def create(self, record_values):
         assert self.attachment
         if not record_values:
@@ -63,7 +65,7 @@ class FileURL(fields.Binary):
                     storage_key = False
                 env['ir.attachment'].sudo().with_context(
                     binary_field_real_user=env.user,
-                    storage_location=self.storage_location,
+                    storage_location=self._storage_location(),
                     force_storage_key=storage_key,
                 ).create(vals)
 
@@ -76,24 +78,34 @@ class FileURL(fields.Binary):
                     storage_key = self._build_storage_key(fname)
             super().write(
                 records.with_context(
-                    storage_location=self.storage_location,
+                    storage_location=self._storage_location(),
                     force_storage_key=storage_key,
                 ),
-                value
+                value,
             )
         return True
 
     def _setup_regular_base(self, model):
         super()._setup_regular_base(model)
         if self.storage_path:
-            assert self.filename is not None, \
+            assert self.filename is not None, (
                 "Field %s defines storage_path without filename" % self
+            )
 
     def _build_storage_key(self, filename):
-        return '/'.join([
-            self.storage_path.rstrip('/'),
-            unicodedata.normalize('NFKC', filename)
-        ])
+        return '/'.join(
+            [
+                self.storage_path.rstrip('/'),
+                unicodedata.normalize('NFKC', filename),
+            ]
+        )
+
+    def _storage_location(self):
+        # Avoid pushing to s3 in test mode or installation of demo data
+        force_file_storage = (
+            config['test_enable'] or config['init'] and config['demo']
+        )
+        return 'file' if force_file_storage else self.storage_location
 
 
 fields.FileURL = FileURL