diff --git a/shanoir-ng-datasets/src/main/java/org/shanoir/ng/dataset/service/DatasetServiceImpl.java b/shanoir-ng-datasets/src/main/java/org/shanoir/ng/dataset/service/DatasetServiceImpl.java
index 7586f512f4..89724aee8e 100644
--- a/shanoir-ng-datasets/src/main/java/org/shanoir/ng/dataset/service/DatasetServiceImpl.java
+++ b/shanoir-ng-datasets/src/main/java/org/shanoir/ng/dataset/service/DatasetServiceImpl.java
@@ -93,9 +93,9 @@ public void deleteById(final Long id) throws ShanoirException, SolrServerExcepti
 		if (datasetDb == null) {
 			throw new EntityNotFoundException(Dataset.class, id);
 		}
-		repository.deleteById(id);
 		solrService.deleteFromIndex(id);
 		this.deleteDatasetFromPacs(datasetDb);
+		repository.deleteById(id);
 		shanoirEventService.publishEvent(new ShanoirEvent(ShanoirEventType.DELETE_DATASET_EVENT, id.toString(), KeycloakUtil.getTokenUserId(), "", ShanoirEvent.SUCCESS, datasetDb.getStudyId()));
 	}
 
diff --git a/shanoir-ng-datasets/src/main/java/org/shanoir/ng/dicom/web/service/DICOMWebService.java b/shanoir-ng-datasets/src/main/java/org/shanoir/ng/dicom/web/service/DICOMWebService.java
index 3a9f5484ad..76d9d6bb9a 100644
--- a/shanoir-ng-datasets/src/main/java/org/shanoir/ng/dicom/web/service/DICOMWebService.java
+++ b/shanoir-ng-datasets/src/main/java/org/shanoir/ng/dicom/web/service/DICOMWebService.java
@@ -295,7 +295,7 @@ public void deleteDicomFilesFromPacs(String url) throws ShanoirException {
 		HttpPost post = new HttpPost(rejectURL);
 		post.setHeader(HttpHeaders.CONTENT_TYPE, CONTENT_TYPE_JSON);
 		try (CloseableHttpResponse response = httpClient.execute(post)) {
-			if (response.getCode() == HttpStatus.NO_CONTENT.value()) {
+			if (HttpStatus.OK.value() == response.getCode()) {
 				LOG.info("Rejected from PACS: " + url);
 			} else {
 				LOG.error(response.getCode() + ": Could not reject instance from PACS: " + response.getReasonPhrase()
@@ -304,8 +304,8 @@ public void deleteDicomFilesFromPacs(String url) throws ShanoirException {
 				+ "for rejectURL: " + rejectURL);
 			}
 		} catch (IOException e) {
-			LOG.error(e.getMessage(), e);
-			throw new ShanoirException(e.getMessage());
+			LOG.error("Could not reject instance from PACS: for rejectURL: " + rejectURL, e);
+			throw new ShanoirException("Could not reject instance from PACS: for rejectURL: " + url, e);
 		}
 		// STEP 2: Delete from the PACS
 		HttpDelete delete = new HttpDelete(deleteUrl);
diff --git a/shanoir-ng-front/src/app/shared/notifications/notifications.service.ts b/shanoir-ng-front/src/app/shared/notifications/notifications.service.ts
index edd0bb2a5c..d034a1cd4f 100644
--- a/shanoir-ng-front/src/app/shared/notifications/notifications.service.ts
+++ b/shanoir-ng-front/src/app/shared/notifications/notifications.service.ts
@@ -42,7 +42,7 @@ export class NotificationsService {
     readonly readInterval: number = 1000;
     readonly persistenceTime: number = 1800000;
     private freshTimeouts: SuperTimeout[] = [];
-    private readonly TIMEOUT: number = 30000;
+    private readonly TIMEOUT: number = 300000;
 
 
     constructor(private taskService: TaskService, private keycloakService: KeycloakService) {
@@ -229,4 +229,4 @@ export class NotificationsService {
         this.tasksInProgress.forEach(task => total += task.progress);
         return total/this.tasksInProgress.length;
     }
-}
\ No newline at end of file
+}
diff --git a/shanoir-ng-front/src/app/studies/study/study.component.ts b/shanoir-ng-front/src/app/studies/study/study.component.ts
index 9ceba3f82f..0430cf0cc0 100644
--- a/shanoir-ng-front/src/app/studies/study/study.component.ts
+++ b/shanoir-ng-front/src/app/studies/study/study.component.ts
@@ -127,7 +127,7 @@ export class StudyComponent extends EntityComponent<Study> {
         this.studyRightsService.getMyRightsForStudy(this.id).then(rights => {
             this.hasDownloadRight = this.keycloakService.isUserAdmin() || rights.includes(StudyUserRight.CAN_DOWNLOAD);
         })
-        let studyPromise: Promise<Study> = this.studyService.get(this.id, null, true).then(study => {
+        let studyPromise: Promise<Study> = this.studyService.get(this.id, null).then(study => {
 
           this.study = study;
           this.setLabeledSizes(this.study);
@@ -166,7 +166,7 @@ export class StudyComponent extends EntityComponent<Study> {
     }
 
     initEdit(): Promise<void> {
-        let studyPromise: Promise<Study> = this.studyService.get(this.id, null, true).then(study => {
+        let studyPromise: Promise<Study> = this.studyService.get(this.id, null).then(study => {
             this.study = study;
 
             if (this.study.profile == null) {
@@ -273,7 +273,6 @@ export class StudyComponent extends EntityComponent<Study> {
                 if (datasetSizes.extraDataSize > 0){
                     sizesByLabel.set("Other files (DUA, protocol...)", datasetSizes.extraDataSize);
                 }
-                let total = datasetSizes.total;
                 study.detailedSizes = sizesByLabel;
             });
         }).finally(() => {
@@ -659,7 +658,7 @@ export class StudyComponent extends EntityComponent<Study> {
     downloadSelected() {
         this.downloadService.downloadByIds(this.selectedDatasetIds);
     }
-    
+
     storageVolumePrettyPrint(size: number) {
         return this.studyService.storageVolumePrettyPrint(size);
     }