diff --git a/website_sponsorship/controllers/main.py b/website_sponsorship/controllers/main.py
index 2830d4d..a638a06 100644
--- a/website_sponsorship/controllers/main.py
+++ b/website_sponsorship/controllers/main.py
@@ -93,7 +93,16 @@ def load_child(self, **kwargs):
 
     @http.route(
         [
-            "/child/<model('compassion.child'):child>/",
+            # [T1835] : Note: the route MUST be specified *without* a trailing
+            # "/" otherwise when a child with a given id does not exist, the 404
+            # Not Found page is not displayed and instead we get an infinite
+            # redirect loop. The root cause is that specifying a path with a
+            # trailing "/" adds the "/" to the path, and then ir_http.py
+            # (https://github.com/odoo/odoo/blob/
+            # f2765d2cab5671a010404c36842bf1b4c4d6350b/addons/website/models
+            # /ir_http.py#L265) redirects to a version without the "/", creating
+            # the infinite loop.
+            "/child/<model('compassion.child'):child>",
         ],
         type="http",
         auth="public",