diff --git a/internal/catalogue/served_own_names_test.go b/internal/catalogue/served_own_names_test.go
index 360deff1..1c3bc9ed 100644
--- a/internal/catalogue/served_own_names_test.go
+++ b/internal/catalogue/served_own_names_test.go
@@ -147,3 +147,17 @@ func TestAServedNameIsCheckedWhenTheDefinitionIsRead(t *testing.T) {
 		t.Fatalf("its own name is accepted: %v", err)
 	}
 }
+
+// The provider's contributions file carries no own name on a consumer's entry (ADR 0346 §4): only what
+// is derived for that consumer is there (ADR 0202 §5), and the provider reads its own names in its files.
+func TestAProvidersOwnNameIsNotOnItsConsumersEntry(t *testing.T) {
+	m := aForgeManifest(t)
+	r := Resolution{Node: "home", PublicDomain: "example.org", Modules: []Manifest{m}}
+	derived, err := r.derivedFor("npm-package-registry", "lab_home", "lab", "", nil)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if derived != nil {
+		t.Fatalf("a consumer's entry carries only what was derived for it: %v", derived)
+	}
+}