diff --git a/client-cli/src/test/java/org/eclipse/dataspaceconnector/registration/cli/ParticipantsCommandTest.java b/client-cli/src/test/java/org/eclipse/dataspaceconnector/registration/cli/ParticipantsCommandTest.java
index 85ecb7a4..3d2968a4 100644
--- a/client-cli/src/test/java/org/eclipse/dataspaceconnector/registration/cli/ParticipantsCommandTest.java
+++ b/client-cli/src/test/java/org/eclipse/dataspaceconnector/registration/cli/ParticipantsCommandTest.java
@@ -42,6 +42,7 @@ class ParticipantsCommandTest {
     Participant participant2 = createParticipant();
     String serverUrl = FAKER.internet().url();
     String idsUrl = FAKER.internet().url();
+    String did = FAKER.internet().url();
 
     RegistrationServiceCli app = new RegistrationServiceCli();
     CommandLine cmd = new CommandLine(app);
@@ -59,7 +60,7 @@ void list() throws Exception {
         when(app.registryApiClient.listParticipants())
                 .thenReturn(participants);
 
-        var exitCode = executeParticipantsAdd();
+        var exitCode = executeParticipantsList();
         assertThat(exitCode).isEqualTo(0);
         assertThat(serverUrl).isEqualTo(app.service);
 
@@ -81,16 +82,16 @@ void add() {
 
     private int executeParticipantsAdd(String idsUrl) {
         return cmd.execute(
-                "-d", "did:web:did-server:test-authority",
+                "-d", did,
                 "-k", "../rest-client/src/test/resources/private_p256.pem",
                 "-s", serverUrl,
                 "participants", "add",
                 "--ids-url", idsUrl);
     }
 
-    private int executeParticipantsAdd() {
+    private int executeParticipantsList() {
         return cmd.execute(
-                "-d", "did:web:did-server:test-authority",
+                "-d", did,
                 "-k", "../rest-client/src/test/resources/private_p256.pem",
                 "-s", serverUrl,
                 "participants", "list");
diff --git a/extensions/registration-service/src/main/java/org/eclipse/dataspaceconnector/registration/api/RegistrationApiController.java b/extensions/registration-service/src/main/java/org/eclipse/dataspaceconnector/registration/api/RegistrationApiController.java
index 3f74e51b..857bc024 100644
--- a/extensions/registration-service/src/main/java/org/eclipse/dataspaceconnector/registration/api/RegistrationApiController.java
+++ b/extensions/registration-service/src/main/java/org/eclipse/dataspaceconnector/registration/api/RegistrationApiController.java
@@ -42,6 +42,9 @@
 @Path("/registry")
 public class RegistrationApiController {
 
+    /**
+     * A IDS URL (this will be removed in https://github.com/agera-edc/MinimumViableDataspace/issues/174)
+     */
     private static final String TEMPORARY_IDS_URL_HEADER = "IdsUrl";
 
     private final RegistrationService service;
@@ -68,7 +71,8 @@ public List<Participant> listParticipants() {
     @ApiResponse(responseCode = "204", description = "No content")
     @POST
     public void addParticipant(
-            @HeaderParam(TEMPORARY_IDS_URL_HEADER) String idsUrl, @Context HttpHeaders headers) {
+            @HeaderParam(TEMPORARY_IDS_URL_HEADER) String idsUrl,
+            @Context HttpHeaders headers) {
         var issuer = Objects.requireNonNull(headers.getHeaderString(CALLER_DID_HEADER));
 
         service.addParticipant(issuer, idsUrl);
diff --git a/system-tests/src/test/java/org/eclipse/dataspaceconnector/registration/client/RegistrationApiClientTest.java b/system-tests/src/test/java/org/eclipse/dataspaceconnector/registration/client/RegistrationApiClientTest.java
index 21da1ee4..f15bb6d4 100644
--- a/system-tests/src/test/java/org/eclipse/dataspaceconnector/registration/client/RegistrationApiClientTest.java
+++ b/system-tests/src/test/java/org/eclipse/dataspaceconnector/registration/client/RegistrationApiClientTest.java
@@ -30,18 +30,23 @@
 @IntegrationTest
 public class RegistrationApiClientTest {
     static final String API_URL = "http://localhost:8182/authority";
-
     static final Faker FAKER = new Faker();
+    static RegistryApi api;
+
     String participantUrl = FAKER.internet().url();
 
-    @Test
-    void listParticipants() throws Exception {
+    @BeforeAll
+    static void setUpClass() throws Exception {
         var privateKey = Path.of(PRIVATE_KEY_FILE);
         var ecKey = (ECKey) ECKey.parseFromPEMEncodedObjects(Files.readString(privateKey));
         var privateKeyWrapper = new EcPrivateKeyWrapper(ecKey);
 
         var apiClient = ApiClientFactory.createApiClient(API_URL, DID_WEB, privateKeyWrapper);
-        var api = new RegistryApi(apiClient);
+        api = new RegistryApi(apiClient);
+    }
+
+    @Test
+    void listParticipants() {
 
         assertThat(api.listParticipants())
                 .noneSatisfy(p -> assertThat(p.getUrl()).isEqualTo(participantUrl));
diff --git a/system-tests/src/test/java/org/eclipse/dataspaceconnector/registration/client/RegistrationApiCommandLineClientTest.java b/system-tests/src/test/java/org/eclipse/dataspaceconnector/registration/client/RegistrationApiCommandLineClientTest.java
index 2a07023b..90d1f67b 100644
--- a/system-tests/src/test/java/org/eclipse/dataspaceconnector/registration/client/RegistrationApiCommandLineClientTest.java
+++ b/system-tests/src/test/java/org/eclipse/dataspaceconnector/registration/client/RegistrationApiCommandLineClientTest.java
@@ -31,6 +31,7 @@
 import static org.eclipse.dataspaceconnector.registration.client.TestUtils.DID_WEB;
 import static org.eclipse.dataspaceconnector.registration.client.TestUtils.PRIVATE_KEY_FILE;
 
+@IntegrationTest
 public class RegistrationApiCommandLineClientTest {
     static final ObjectMapper MAPPER = new ObjectMapper();
     static final Faker FAKER = new Faker();