diff --git a/src/yunohost/data_migrations/0003_migrate_to_stretch.py b/src/yunohost/data_migrations/0003_migrate_to_stretch.py
index 6900b678a..49e85a64e 100644
--- a/src/yunohost/data_migrations/0003_migrate_to_stretch.py
+++ b/src/yunohost/data_migrations/0003_migrate_to_stretch.py
@@ -85,11 +85,13 @@ class MyMigration(Migration):
         self.upgrade_yunohost_packages()
 
     def debian_major_version(self):
-        # We rely on lsb_release instead of the python module "platform",
-        # because "platform" relies on uname, which on some weird setups does
-        # not behave correctly (still says running Jessie when lsb_release says
-        # Stretch...)
-        return int(check_output("lsb_release -r").split("\t")[1][0])
+        # The python module "platform" and lsb_release are not reliable because
+        # on some setup, they still return Release=8 even after upgrading to
+        # stretch ... (Apparently this is related to OVH overriding some stuff
+        # with /etc/lsb-release for instance -_-)
+        # Instead, we rely on /etc/os-release which should be the raw info from
+        # the distribution...
+        return int(check_output("grep VERSION_ID /etc/os-release | tr '\"' ' ' | cut -d ' ' -f2"))
 
     def yunohost_major_version(self):
         return int(get_installed_version("yunohost").split('.')[0])