diff --git a/greg/api/urls.py b/greg/api/urls.py
index c20513efc8e5e216945fc5e20ab8518c1859abf2..a2c98d41ba310ce9dbba1f4672a56d103206fc37 100644
--- a/greg/api/urls.py
+++ b/greg/api/urls.py
@@ -13,7 +13,7 @@ from greg.api.views.person import (
 from greg.api.views.role_type import RoleTypeViewSet
 from greg.api.views.sponsor import SponsorViewSet, SponsorGuestsViewSet
 
-router = DefaultRouter()
+router = DefaultRouter(trailing_slash=False)
 router.register(r"persons", PersonViewSet, basename="person")
 router.register(r"roletypes", RoleTypeViewSet, basename="roletype")
 router.register(r"consenttypes", ConsentTypeViewSet, basename="consenttype")
@@ -23,33 +23,34 @@ router.register(r"orgunit", OrganizationalUnitViewSet, basename="orgunit")
 
 urlpatterns = router.urls
 
+# Allowing trailing slashes to be optional for the URLs below
 urlpatterns += [
     re_path(
-        r"^persons/(?P<person_id>[0-9]+)/roles/$",
+        r"^persons/(?P<person_id>[0-9]+)/roles/?$",
         RoleViewSet.as_view({"get": "list", "post": "create"}),
         name="person_role-list",
     ),
     re_path(
-        r"^persons/(?P<person_id>[0-9]+)/roles/(?P<id>[0-9]+)/$",
+        r"^persons/(?P<person_id>[0-9]+)/roles/(?P<id>[0-9]+)/?$",
         RoleViewSet.as_view(
             {"get": "retrieve", "patch": "partial_update", "delete": "destroy"}
         ),
         name="person_role-detail",
     ),
     re_path(
-        r"^persons/(?P<person_id>[0-9]+)/identities/$",
+        r"^persons/(?P<person_id>[0-9]+)/identities/?$",
         IdentityViewSet.as_view({"get": "list", "post": "create"}),
         name="person_identity-list",
     ),
     re_path(
-        r"^persons/(?P<person_id>[0-9]+)/identities/(?P<id>[0-9]+)$",
+        r"^persons/(?P<person_id>[0-9]+)/identities/(?P<id>[0-9]+)/?$",
         IdentityViewSet.as_view(
             {"get": "retrieve", "delete": "destroy", "patch": "partial_update"}
         ),
         name="person_identity-detail",
     ),
     re_path(
-        r"^sponsors/(?P<sponsor_id>[0-9]+)/guests/$",
+        r"^sponsors/(?P<sponsor_id>[0-9]+)/guests/?$",
         SponsorGuestsViewSet.as_view({"get": "list"}),
         name="sponsor_guests-list",
     ),