diff --git a/backend/bdd/features/pki/acme/external-ca.feature b/backend/bdd/features/pki/acme/external-ca.feature
index eac3b9c22..6b4123b91 100644
--- a/backend/bdd/features/pki/acme/external-ca.feature
+++ b/backend/bdd/features/pki/acme/external-ca.feature
@@ -164,4 +164,10 @@ Feature: External CA
     Then I poll and finalize the ACME order order as finalized_order
     And the value finalized_order.body with jq ".status" should be equal to "valid"
     And I parse the full-chain certificate from order finalized_order as cert
-    And the value cert with jq ".subject.common_name" should be equal to "localhost"
+    # Note: somehow Pebble is issuing a cert without common name but just SANs
+    And the value cert with jq "[.extensions.subjectAltName.general_names.[].value] | sort" should be equal to json
+      """
+      [
+        "localhost"
+      ]
+      """
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