diff --git a/packages/grafana-data/src/vector/CircularVector.ts b/packages/grafana-data/src/vector/CircularVector.ts
index ce0253cf560..b8f9ab8fa3f 100644
--- a/packages/grafana-data/src/vector/CircularVector.ts
+++ b/packages/grafana-data/src/vector/CircularVector.ts
@@ -15,7 +15,7 @@ interface CircularOptions<T> {
  * This supports adding to the 'head' or 'tail' and will grow the buffer
  * to match a configured capacity.
  */
-export class CircularVector<T = any> extends FunctionalVector implements MutableVector<T> {
+export class CircularVector<T = any> extends FunctionalVector<T> implements MutableVector<T> {
   private buffer: T[];
   private index: number;
   private capacity: number;