diff --git a/frontend/javascripts/test/reducers/skeletontracing_reducer.spec.ts b/frontend/javascripts/test/reducers/skeletontracing_reducer.spec.ts
index b57f726da3..caaac52ef2 100644
--- a/frontend/javascripts/test/reducers/skeletontracing_reducer.spec.ts
+++ b/frontend/javascripts/test/reducers/skeletontracing_reducer.spec.ts
@@ -838,7 +838,7 @@ test("SkeletonTracing should add a new tree", (t) => {
     branchPoints: [],
     nodes: new DiffableMap(),
     treeId: 2,
-    color: [105 / 255, 212 / 255, 8 / 255],
+    color: [0, 0, 1],
   });
 });
 test("SkeletonTracing should add a several new trees", (t) => {