diff --git a/src/models/state.ts b/src/models/state.ts
index dab200f..72ff5e9 100755
--- a/src/models/state.ts
+++ b/src/models/state.ts
@@ -1,4 +1,4 @@
-import { CoreSerie, Options, yAxisOrientation } from '../types';
+import { Serie, Options, yAxisOrientation } from '../types';
 import { CoreSeries } from './series';
 import { CoreOptions } from './options';
 
@@ -23,7 +23,7 @@ const DEFAULT_TRANSFORM = {
 // TODO: replace all getters with fields. Because getters will be recalculated on each call. Use scales as example.
 // TODO: remove duplicates in max/min values.
 // TODO: PodState.transform has conflicts with d3.zoom.event.transform. It should be synchronized.
-export class PodState<T extends CoreSerie, O extends Options> {
+export class PodState<T extends Serie, O extends Options> {
   private _xValueRange: [number, number];
   private _yValueRange: [number, number];
   private _y1ValueRange: [number, number];