diff --git a/apps/red-ui/src/app/modules/pdf-viewer/services/viewer-header.service.ts b/apps/red-ui/src/app/modules/pdf-viewer/services/viewer-header.service.ts
index 2c6453be6..41b4d7d05 100644
--- a/apps/red-ui/src/app/modules/pdf-viewer/services/viewer-header.service.ts
+++ b/apps/red-ui/src/app/modules/pdf-viewer/services/viewer-header.service.ts
@@ -312,12 +312,15 @@ export class ViewerHeaderService {
         this._pdf.instance?.UI.updateElement('selectToolButton', {
             img: this.#convertPath('/assets/icons/general/pdftron-cursor.svg'),
         });
-        this._tooltipsService.updateIconState();
-        this._layersService.updateIconState();
-        const closeCompareButton = this._pdf.instance.UI.iframeWindow.document.querySelector(
-            `[data-element=${HeaderElements.CLOSE_COMPARE_BUTTON}]`,
-        );
-        closeCompareButton?.classList.add('active');
+
+        if (this._pdf.instance) {
+            this._tooltipsService.updateIconState();
+            this._layersService.updateIconState();
+            const closeCompareButton = this._pdf.instance.UI.iframeWindow.document.querySelector(
+                `[data-element=${HeaderElements.CLOSE_COMPARE_BUTTON}]`,
+            );
+            closeCompareButton?.classList.add('active');
+        }
     }
 
     disableLoadAllAnnotations(): void {
diff --git a/apps/red-ui/src/app/modules/shared-dossiers/components/file-actions/file-actions.component.ts b/apps/red-ui/src/app/modules/shared-dossiers/components/file-actions/file-actions.component.ts
index 208bc62cf..8cda2b996 100644
--- a/apps/red-ui/src/app/modules/shared-dossiers/components/file-actions/file-actions.component.ts
+++ b/apps/red-ui/src/app/modules/shared-dossiers/components/file-actions/file-actions.component.ts
@@ -30,7 +30,6 @@ import { DocumentInfoService } from '../../../file-preview/services/document-inf
 import { ExcludedPagesService } from '../../../file-preview/services/excluded-pages.service';
 import { PageRotationService } from '../../../pdf-viewer/services/page-rotation.service';
 import { ViewerHeaderService } from '../../../pdf-viewer/services/viewer-header.service';
-import { ROTATION_ACTION_BUTTONS } from '../../../pdf-viewer/utils/constants';
 import { AssignReviewerApproverDialogComponent } from '../../dialogs/assign-reviewer-approver-dialog/assign-reviewer-approver-dialog.component';
 import { DossiersDialogService } from '../../services/dossiers-dialog.service';
 import { FileAssignService } from '../../services/file-assign.service';
@@ -410,7 +409,7 @@ export class FileActionsComponent implements OnChanges {
         const pageRotationService = this._injector.get(PageRotationService);
         await firstValueFrom(pageRotationService.showConfirmationDialogIfHasRotations());
         const viewerHeaderService = this._injector.get(ViewerHeaderService);
-        viewerHeaderService.disable(ROTATION_ACTION_BUTTONS);
+        viewerHeaderService.disableRotationButtons();
 
         this._loadingService.start();
         await this._reanalysisService.ocrFiles([this.file], this.file.dossierId);