diff --git a/tests/e2e/wg/test_wg_domain_access.py b/tests/e2e/wg/test_wg_domain_access.py
index 2a6bcb0..c4d6fcb 100644
--- a/tests/e2e/wg/test_wg_domain_access.py
+++ b/tests/e2e/wg/test_wg_domain_access.py
@@ -153,13 +153,12 @@ def test_http_api_domain_reaches_api(connected_peer, admin_client):
 
 # ── Scenario 33: Config DNS field ─────────────────────────────────────────────
 
-def test_peer_services_config_has_coredns_not_vpn_gateway(admin_client, make_peer):
+def test_peer_services_config_has_coredns_not_vpn_gateway(admin_client, make_peer, api_base):
     """WireGuard config in /api/peer/services must use CoreDNS IP, not 10.0.0.1."""
     from helpers.api_client import PicAPIClient
-    import os
 
     peer = make_peer('e2etest-dns-config', password='DnsTest123!')
-    peer_client = PicAPIClient(os.environ.get('PIC_API_BASE', 'http://192.168.31.51:3000'))
+    peer_client = PicAPIClient(api_base)
     peer_client.login(peer['name'], 'DnsTest123!')
 
     r = peer_client.get('/api/peer/services')
@@ -188,14 +187,13 @@ def test_peer_services_config_has_coredns_not_vpn_gateway(admin_client, make_pee
                 break
 
 
-def test_peer_services_caldav_url_uses_configured_domain(admin_client, make_peer):
+def test_peer_services_caldav_url_uses_configured_domain(admin_client, make_peer, api_base):
     """CalDAV URL must use the configured domain, not hardcode 'radicale.dev:5232'."""
     from helpers.api_client import PicAPIClient
-    import os
 
     dom = _domain(admin_client)
     peer = make_peer('e2etest-caldav-url', password='CaldavTest123!')
-    peer_client = PicAPIClient(os.environ.get('PIC_API_BASE', 'http://192.168.31.51:3000'))
+    peer_client = PicAPIClient(api_base)
     peer_client.login(peer['name'], 'CaldavTest123!')
 
     r = peer_client.get('/api/peer/services')