diff --git a/src/panel/graph_panel/controllers/analytic_controller.ts b/src/panel/graph_panel/controllers/analytic_controller.ts
index b6b0393..d6311df 100644
--- a/src/panel/graph_panel/controllers/analytic_controller.ts
+++ b/src/panel/graph_panel/controllers/analytic_controller.ts
@@ -187,7 +187,7 @@ export class AnalyticController {
   }
 
   addLabelSegment(segment: Segment, deleted = false) {
-    var asegment = this.labelingUnit.addLabeledSegment(segment, deleted);
+    const asegment = this.labelingUnit.addLabeledSegment(segment, deleted);
     this._labelingDataAddedSegments.addSegment(asegment);
   }
 
diff --git a/src/panel/graph_panel/models/analytic_unit.ts b/src/panel/graph_panel/models/analytic_unit.ts
index 4c3c5c8..3a7ea50 100644
--- a/src/panel/graph_panel/models/analytic_unit.ts
+++ b/src/panel/graph_panel/models/analytic_unit.ts
@@ -81,7 +81,7 @@ export class AnalyticUnit {
   }
 
   addLabeledSegment(segment: Segment, deleted: boolean): AnalyticSegment {
-    var asegment = new AnalyticSegment(!deleted, segment.id, segment.from, segment.to, deleted);
+    const asegment = new AnalyticSegment(!deleted, segment.id, segment.from, segment.to, deleted);
     this._segmentSet.addSegment(asegment);
     return asegment;
   }