diff --git a/shanoir-ng-datasets/src/main/java/org/shanoir/ng/datasetacquisition/validation/DatasetsModalityTypeCheckValidator.java b/shanoir-ng-datasets/src/main/java/org/shanoir/ng/datasetacquisition/validation/DatasetsModalityTypeCheckValidator.java
index c3c1ed1922..140f8b06af 100644
--- a/shanoir-ng-datasets/src/main/java/org/shanoir/ng/datasetacquisition/validation/DatasetsModalityTypeCheckValidator.java
+++ b/shanoir-ng-datasets/src/main/java/org/shanoir/ng/datasetacquisition/validation/DatasetsModalityTypeCheckValidator.java
@@ -16,10 +16,8 @@
 
 import jakarta.validation.ConstraintValidator;
 import jakarta.validation.ConstraintValidatorContext;
-import org.shanoir.ng.dataset.modality.CtDataset;
-import org.shanoir.ng.dataset.modality.MrDataset;
-import org.shanoir.ng.dataset.modality.PetDataset;
 import org.shanoir.ng.dataset.model.Dataset;
+import org.shanoir.ng.dataset.model.DatasetType;
 import org.shanoir.ng.datasetacquisition.model.DatasetAcquisition;
 import org.shanoir.ng.datasetacquisition.model.ct.CtDatasetAcquisition;
 import org.shanoir.ng.datasetacquisition.model.mr.MrDatasetAcquisition;
@@ -42,22 +40,22 @@ public void initialize(final DatasetsModalityTypeCheck constraintAnnotation) {
 
 	@Override
 	public boolean isValid(final DatasetAcquisition datasetAcquisition, final ConstraintValidatorContext context) {
-		if (datasetAcquisition.getDatasets() != null && !datasetAcquisition.getDatasets().isEmpty()) {			
+		if (datasetAcquisition.getDatasets() != null && !datasetAcquisition.getDatasets().isEmpty()) {
 			if (datasetAcquisition instanceof MrDatasetAcquisition) {
 				for (Dataset dataset : datasetAcquisition.getDatasets()) {
-					if (!(dataset instanceof MrDataset)) {
+					if (!(dataset.getType().equals(DatasetType.Mr))) {
 						return false;
 					}
 				}
 			} else if (datasetAcquisition instanceof PetDatasetAcquisition) {
 				for (Dataset dataset : datasetAcquisition.getDatasets()) {
-					if (!(dataset instanceof PetDataset)) {
+					if (!(dataset.getType().equals(DatasetType.Pet))) {
 						return false;
 					}
 				}
 			} else if (datasetAcquisition instanceof CtDatasetAcquisition) {
 				for (Dataset dataset : datasetAcquisition.getDatasets()) {
-					if (!(dataset instanceof CtDataset)) {
+					if (!(dataset.getType().equals(DatasetType.Ct))) {
 						return false;
 					}
 				}
diff --git a/shanoir-ng-ms-common/src/main/java/org/shanoir/ng/shared/configuration/RabbitMQConfiguration.java b/shanoir-ng-ms-common/src/main/java/org/shanoir/ng/shared/configuration/RabbitMQConfiguration.java
index 152ba628f4..44b4ae88cf 100644
--- a/shanoir-ng-ms-common/src/main/java/org/shanoir/ng/shared/configuration/RabbitMQConfiguration.java
+++ b/shanoir-ng-ms-common/src/main/java/org/shanoir/ng/shared/configuration/RabbitMQConfiguration.java
@@ -312,13 +312,17 @@ public static Queue subjectStudyQueue() {
 	public static Queue studiesSubjectStudyStudyCardTagQueue() {
 		return new Queue(STUDIES_SUBJECT_STUDY_STUDY_CARD_TAG, true);
 	}
-	
-	@Bean
-	public static Queue deleteSubjectQueue() { return new Queue(DELETE_SUBJECT_QUEUE, true); }
 
 	@Bean
-	public static Queue deleteAnimalSubjectQueue() { return new Queue(DELETE_ANIMAL_SUBJECT_QUEUE, true); }
+	public static Queue deleteSubjectQueue() {
+		return new Queue(DELETE_SUBJECT_QUEUE, true);
+  	}
 	
+  	@Bean
+	public static Queue deleteAnimalSubjectQueue() {
+		return new Queue(DELETE_ANIMAL_SUBJECT_QUEUE, true);
+  	}
+
 	@Bean
 	public static Queue importerQueue() {
 		return new Queue(IMPORTER_QUEUE_DATASET, true);