diff --git a/extensions/cornerstone/src/init.tsx b/extensions/cornerstone/src/init.tsx
index 8cefeb3356..e016363901 100644
--- a/extensions/cornerstone/src/init.tsx
+++ b/extensions/cornerstone/src/init.tsx
@@ -276,9 +276,9 @@ export default async function init({
   const subscribeToEvents = listeners => {
     Object.entries(listeners).forEach(([event, commands]) => {
       const supportedEvents = [
-        segmentationService?.EVENTS.ACTIVE_SEGMENTATION_CHANGED,
-        segmentationService?.EVENTS.SEGMENTATION_ADDED,
-        segmentationService?.EVENTS.SEGMENT_REMOVED,
+        segmentationService.EVENTS.ACTIVE_SEGMENTATION_CHANGED,
+        segmentationService.EVENTS.SEGMENTATION_ADDED,
+        segmentationService.EVENTS.SEGMENT_REMOVED,
       ];
 
       if (supportedEvents.includes(event)) {
diff --git a/extensions/cornerstone/src/services/SegmentationService/SegmentationService.ts b/extensions/cornerstone/src/services/SegmentationService/SegmentationService.ts
index 9d08af9495..ece02dad21 100644
--- a/extensions/cornerstone/src/services/SegmentationService/SegmentationService.ts
+++ b/extensions/cornerstone/src/services/SegmentationService/SegmentationService.ts
@@ -1716,9 +1716,7 @@ class SegmentationService extends PubSubService {
   };
 
   private _setActiveSegment(segmentationId: string, segmentIndex: number) {
-
     cstSegmentation.segmentIndex.setActiveSegmentIndex(segmentationId, segmentIndex);
-
   }
 
   private _getVolumeIdForDisplaySet(displaySet) {