diff --git a/src/atlasComponents/userAnnotations/tools/service.ts b/src/atlasComponents/userAnnotations/tools/service.ts
index a80e18c17555fe09ca955d40634a6b0e74ba084e..80a1aa39b4063cce1ae8cbda45760b4d96a842d7 100644
--- a/src/atlasComponents/userAnnotations/tools/service.ts
+++ b/src/atlasComponents/userAnnotations/tools/service.ts
@@ -20,6 +20,7 @@ import { AnnotationLayer } from "src/atlasComponents/annotations";
 import { translateV3Entities } from "src/atlasComponents/sapi/translateV3";
 
 const LOCAL_STORAGE_KEY = 'userAnnotationKey'
+const ANNOTATION_LAYER_NAME = "modular_tool_layer_name"
 
 type TAnnotationMetadata = {
   id: string
@@ -66,11 +67,11 @@ export class ModularUserAnnotationToolService implements OnDestroy{
   static TMP_PREVIEW_ANN_ID = 'tmp_preview_ann_id'
   static VIEWER_MODE = ARIA_LABELS.VIEWER_MODE_ANNOTATING
 
-  static ANNOTATION_LAYER_NAME = 'modular_tool_layer_name'
+  
   static USER_ANNOTATION_LAYER_SPEC = {
     "type": "annotation",
     "tool": "annotateBoundingBox",
-    "name": ModularUserAnnotationToolService.ANNOTATION_LAYER_NAME,
+    "name": ANNOTATION_LAYER_NAME,
     "annotationColor": "#ee00ff",
     "annotations": [],
   }
@@ -464,7 +465,7 @@ export class ModularUserAnnotationToolService implements OnDestroy{
               throw new Error(`voxelSize of ${this.selectedTmpl.id} cannot be found!`)
             }
             this.annotationLayer = new AnnotationLayer(
-              ModularUserAnnotationToolService.ANNOTATION_LAYER_NAME,
+              ANNOTATION_LAYER_NAME,
               ModularUserAnnotationToolService.USER_ANNOTATION_LAYER_SPEC.annotationColor
             )
             this.annotationLayer.onHover.subscribe(val => {
diff --git a/src/viewerModule/nehuba/annotation/service.ts b/src/viewerModule/nehuba/annotation/service.ts
index fcc109e8f6cc6b81f561e48c42c8123f62107a3e..5822e9ed19763f188b48e58694bfcc88ae48a0be 100644
--- a/src/viewerModule/nehuba/annotation/service.ts
+++ b/src/viewerModule/nehuba/annotation/service.ts
@@ -5,6 +5,7 @@ import { filter, map, pairwise, startWith } from "rxjs/operators";
 import { AnnotationLayer, TNgAnnotationAABBox, TNgAnnotationLine, TNgAnnotationPoint } from "src/atlasComponents/annotations";
 import { annotation } from "src/state";
 
+const ANNOTATION_LAYER_NAME = 'whale-annotation-layer'
 
 @Injectable({
   providedIn: 'root'
@@ -13,7 +14,6 @@ import { annotation } from "src/state";
 export class NgAnnotationService implements OnDestroy {
 
   private subs: Subscription[]  = []
-  static ANNOTATION_LAYER_NAME = 'whale-annotation-layer'
   static INIT_LAYERS: Set<string> = new Set<string>()
   static COLOR_MAP = new Map<keyof typeof annotation.AnnotationColor, string>([
     [annotation.AnnotationColor.WHITE, "#ffffff"],
@@ -24,7 +24,7 @@ export class NgAnnotationService implements OnDestroy {
   static GET_ANN_LAYER(ann: annotation.UnionAnnotation): AnnotationLayer {
     const color = ann.color || annotation.AnnotationColor.WHITE
     const layerEnum = annotation.AnnotationColor[color] || annotation.AnnotationColor.WHITE
-    const layerName = `${NgAnnotationService.ANNOTATION_LAYER_NAME}-${layerEnum}`
+    const layerName = `${ANNOTATION_LAYER_NAME}-${layerEnum}`
 
     const annLayer = AnnotationLayer.Get(layerName, NgAnnotationService.COLOR_MAP.get(color) || "#ffffff")
     NgAnnotationService.INIT_LAYERS.add(layerName)