diff --git a/goofy-server/src/main/java/de/itvsh/goofy/historie/HistorieModelAssembler.java b/goofy-server/src/main/java/de/itvsh/goofy/historie/HistorieModelAssembler.java
index 8e5eaa28f998654080b36ba438a29fc960123a07..15719a6c8a6f97382dafa786832fc7d1de8c2384 100644
--- a/goofy-server/src/main/java/de/itvsh/goofy/historie/HistorieModelAssembler.java
+++ b/goofy-server/src/main/java/de/itvsh/goofy/historie/HistorieModelAssembler.java
@@ -2,6 +2,7 @@ package de.itvsh.goofy.historie;
 
 import static org.springframework.hateoas.server.mvc.WebMvcLinkBuilder.*;
 
+import java.util.Objects;
 import java.util.Optional;
 import java.util.stream.Stream;
 
@@ -17,19 +18,35 @@ import de.itvsh.goofy.common.user.UserProfileController;
 @Component
 class HistorieModelAssembler implements RepresentationModelAssembler<Command, EntityModel<Command>> {
 
+	static final String SYSTEM_NOTIFICATION_MANAGER_PREFIX = "system-notification_manager";
+
 	static final String REL_ASSIGNED_TO = "assignedTo";
 
 	static final String ASSIGNED_TO_BODY_FIELD = "assignedTo";
 
 	@Override
 	public EntityModel<Command> toModel(Command entity) {
-		var modelBuilder = ModelBuilder.fromEntity(entity).addLink(linkTo(HistorieController.class).slash(entity.getId()).withSelfRel());
+		var cleanCommand = unsetSystemUser(entity);
+		var modelBuilder = ModelBuilder.fromEntity(cleanCommand).addLink(linkTo(HistorieController.class).slash(cleanCommand.getId()).withSelfRel());
 
-		addAssignedTo(entity, modelBuilder);
+		addAssignedTo(cleanCommand, modelBuilder);
 
 		return modelBuilder.buildModel();
 	}
 
+	Command unsetSystemUser(Command entity) {
+		if (isSystemNotificationUser(entity)) {
+			return entity.toBuilder().createdBy(null).build();
+		}
+
+		return entity;
+
+	}
+
+	private boolean isSystemNotificationUser(Command entity) {
+		return Objects.nonNull(entity.getCreatedBy()) && entity.getCreatedBy().toString().startsWith(SYSTEM_NOTIFICATION_MANAGER_PREFIX);
+	}
+
 	private void addAssignedTo(Command entity, ModelBuilder<Command> modelBuilder) {
 		Optional.ofNullable(entity.getBody()).map(body -> body.get(ASSIGNED_TO_BODY_FIELD))
 				.ifPresent(assignedTo -> modelBuilder.addLink(linkTo(UserProfileController.class).slash(assignedTo).withRel(REL_ASSIGNED_TO)));
diff --git a/goofy-server/src/test/java/de/itvsh/goofy/historie/HistorieModelAssemblerTest.java b/goofy-server/src/test/java/de/itvsh/goofy/historie/HistorieModelAssemblerTest.java
index 688517382f94b4ddb2126d06db34271886dafe14..824d8d08f59e6439463026eb40f24f0430e58aaf 100644
--- a/goofy-server/src/test/java/de/itvsh/goofy/historie/HistorieModelAssemblerTest.java
+++ b/goofy-server/src/test/java/de/itvsh/goofy/historie/HistorieModelAssemblerTest.java
@@ -1,5 +1,7 @@
 package de.itvsh.goofy.historie;
 
+import static org.assertj.core.api.Assertions.*;
+
 import java.util.Map;
 
 import org.junit.jupiter.api.DisplayName;
@@ -9,13 +11,16 @@ import org.mockito.InjectMocks;
 import org.springframework.hateoas.IanaLinkRelations;
 import org.springframework.hateoas.Link;
 
-import static org.assertj.core.api.Assertions.*;
-
 import de.itvsh.goofy.common.command.CommandTestFactory;
+import de.itvsh.goofy.common.user.UserId;
 import de.itvsh.goofy.common.user.UserProfileTestFactory;
 
 class HistorieModelAssemblerTest {
 
+	private static final String USER_PROFILES_API_PATH = "/api/userProfiles/";
+
+	private static final String CREATED_BY = "createdBy";
+
 	@InjectMocks
 	private HistorieModelAssembler modelAssembler;
 
@@ -28,14 +33,6 @@ class HistorieModelAssemblerTest {
 		assertThat(model.getLink(IanaLinkRelations.SELF)).isPresent().get().extracting(Link::getHref).isEqualTo(COMMAND_SINGLE_PATH);
 	}
 
-	@Test
-	void shouldHaveCreatedByLink() {
-		var model = modelAssembler.toModel(CommandTestFactory.create());
-
-		assertThat(model.getLink("createdBy")).isPresent().get().extracting(Link::getHref)
-				.isEqualTo("/api/userProfiles/" + UserProfileTestFactory.ID);
-	}
-
 	@DisplayName("AssignedTo Link")
 	@Nested
 	class TestAssignedToLink {
@@ -46,7 +43,7 @@ class HistorieModelAssemblerTest {
 					.body(Map.of(HistorieModelAssembler.ASSIGNED_TO_BODY_FIELD, UserProfileTestFactory.ID)).build());
 
 			assertThat(model.getLink(HistorieModelAssembler.REL_ASSIGNED_TO)).isPresent().get().extracting(Link::getHref)
-					.isEqualTo("/api/userProfiles/" + UserProfileTestFactory.ID);
+					.isEqualTo(USER_PROFILES_API_PATH + UserProfileTestFactory.ID);
 		}
 
 		@Test
@@ -56,4 +53,33 @@ class HistorieModelAssemblerTest {
 			assertThat(model.getLink(HistorieModelAssembler.REL_ASSIGNED_TO)).isNotPresent();
 		}
 	}
+
+	@DisplayName("createdBy Link")
+	@Nested
+	class TestCreatedByLink {
+
+		@Test
+		void shouldExistingAtUser() {
+			var model = modelAssembler.toModel(CommandTestFactory.create());
+
+			assertThat(model.getLink(CREATED_BY)).isPresent().get().extracting(Link::getHref)
+					.isEqualTo(USER_PROFILES_API_PATH + UserProfileTestFactory.ID);
+		}
+
+		@Test
+		void shouldNotExistingAtSystemNotificationMAnager() {
+			var model = modelAssembler
+					.toModel(CommandTestFactory.createBuilder().createdBy(UserId.from(HistorieModelAssembler.SYSTEM_NOTIFICATION_MANAGER_PREFIX))
+							.build());
+
+			assertThat(model.getLink(CREATED_BY)).isNotPresent();
+		}
+
+		@Test
+		void shouldNotBePresentOnNullValue() {
+			var model = modelAssembler.toModel(CommandTestFactory.createBuilder().createdBy(null).build());
+
+			assertThat(model.getLink(CREATED_BY)).isNotPresent();
+		}
+	}
 }
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