diff --git a/base_fileurl_field/fields.py b/base_fileurl_field/fields.py
index 0d2b4b6..793de65 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__ += """
@@ -63,7 +64,7 @@ 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)
 
@@ -76,7 +77,7 @@ 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
@@ -95,5 +96,11 @@ class FileURL(fields.Binary):
             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