diff --git a/dbfilter_from_header/override.py b/dbfilter_from_header/override.py
index f759575b169..43294d8180b 100644
--- a/dbfilter_from_header/override.py
+++ b/dbfilter_from_header/override.py
@@ -13,11 +13,13 @@
 
 
 def db_filter(dbs, host=None):
-    dbs = db_filter_org(dbs, host)
+    dbs_orig = db_filter_org(dbs, host)
     httprequest = http.request.httprequest
     db_filter_hdr = httprequest.environ.get("HTTP_X_ODOO_DBFILTER")
     if db_filter_hdr:
         dbs = [db for db in dbs if re.match(db_filter_hdr, db)]
+    else:
+        dbs = dbs_orig
     return dbs