diff --git a/vorgang-manager-server/src/test/java/de/ozgcloud/vorgang/collaboration/CollaborationITCase.java b/vorgang-manager-server/src/test/java/de/ozgcloud/vorgang/collaboration/CollaborationITCase.java
index dcd94d7fef449ab06e185ca9214ca64d45f72a33..7285590660bcc4f959b39c081ee093131be46848 100644
--- a/vorgang-manager-server/src/test/java/de/ozgcloud/vorgang/collaboration/CollaborationITCase.java
+++ b/vorgang-manager-server/src/test/java/de/ozgcloud/vorgang/collaboration/CollaborationITCase.java
@@ -287,6 +287,11 @@ class CollaborationITCase {
 
 		private static final int COLLABORATION_LEVEL = 4;
 
+		@BeforeEach
+		void mockFachstelleService() {
+			when(fachstelleService.getExterneFachstelle(FachstelleTestFactory.TECHNICAL_ID)).thenReturn(FachstelleTestFactory.create());
+		}
+
 		@Nested
 		class TestSuccessfully {
 			@Captor
@@ -296,7 +301,6 @@ class CollaborationITCase {
 			void init() {
 				when(ozgCloudUserProfile.getId()).thenReturn(OzgCloudUserId.from(CommandTestFactory.CREATED_BY));
 				when(collaborationOzgCloudUserProfileService.getById(any())).thenReturn(ozgCloudUserProfile);
-				when(fachstelleService.getExterneFachstelle(FachstelleTestFactory.TECHNICAL_ID)).thenReturn(FachstelleTestFactory.create());
 			}
 
 			@Test