diff --git a/internal/workflow/preprocessing_test.go b/internal/workflow/preprocessing_test.go
index b5cfa17b..3c68f3c0 100644
--- a/internal/workflow/preprocessing_test.go
+++ b/internal/workflow/preprocessing_test.go
@@ -41,6 +41,10 @@ func (s *PreprocessingTestSuite) SetupTest(cfg config.Configuration) {
 		activities.NewMetadataValidationActivity().Execute,
 		temporalsdk_activity.RegisterOptions{Name: activities.MetadataValidationName},
 	)
+	s.env.RegisterActivityWithOptions(
+		activities.NewCombinePremisActivity().Execute,
+		temporalsdk_activity.RegisterOptions{Name: activities.CombinePremisName},
+	)
 	s.env.RegisterActivityWithOptions(
 		activities.NewSipCreationActivity().Execute,
 		temporalsdk_activity.RegisterOptions{Name: activities.SipCreationName},
@@ -91,6 +95,13 @@ func (s *PreprocessingTestSuite) TestExecute() {
 	).Return(
 		&activities.MetadataValidationResult{}, nil,
 	)
+	s.env.OnActivity(
+		activities.CombinePremisName,
+		sessionCtx,
+		&activities.CombinePremisParams{SipPath: sipPath},
+	).Return(
+		&activities.CombinePremisResult{}, nil,
+	)
 	s.env.OnActivity(
 		activities.SipCreationName,
 		sessionCtx,