diff --git a/archive-manager-server/src/main/java/de/ozgcloud/archive/common/user/UserService.java b/archive-manager-server/src/main/java/de/ozgcloud/archive/common/user/UserService.java
index 18c3a5e2756328eff4a8d2f0119d57e467ead0c3..d17962e610725712e424a6dffab7a961234dba1d 100644
--- a/archive-manager-server/src/main/java/de/ozgcloud/archive/common/user/UserService.java
+++ b/archive-manager-server/src/main/java/de/ozgcloud/archive/common/user/UserService.java
@@ -14,7 +14,7 @@ import lombok.RequiredArgsConstructor;
 @RequiredArgsConstructor
 public class UserService {
 
-	private static final String SYSTEM_USER_ID_PREFIX = "system_";
+	private static final String SYSTEM_USER_ID_PREFIX = "system";
 
 	@Qualifier(ArchiveManagerConfiguration.OZGCLOUD_USER_PROFILE_SERVICE_NAME) // NOSONAR
 	private final OzgCloudUserProfileService grpcOzgCloudUserProfileService;
diff --git a/archive-manager-server/src/test/java/de/ozgcloud/archive/common/user/UserServiceTest.java b/archive-manager-server/src/test/java/de/ozgcloud/archive/common/user/UserServiceTest.java
index 6c16bed05584191d01df3d737c2516911961a527..110e0b71c56f588285b131f7f15e7bc9ad2f46b4 100644
--- a/archive-manager-server/src/test/java/de/ozgcloud/archive/common/user/UserServiceTest.java
+++ b/archive-manager-server/src/test/java/de/ozgcloud/archive/common/user/UserServiceTest.java
@@ -59,14 +59,14 @@ class UserServiceTest {
 
 		@Test
 		void shouldReturnEmptyForSystemId() {
-			var result = service.getById("system_test");
+			var result = service.getById("system-test");
 
 			assertThat(result).isEmpty();
 		}
 
 		@Test
 		void shoultNOTCallRemoteServiceForSystemId() {
-			service.getById("system_test");
+			service.getById("system-test");
 
 			verify(grpcService, never()).getById(any());
 		}