diff --git a/src/models/lis-histogram-data-model.ts b/src/models/lis-histogram-data-model.ts
deleted file mode 100644
index 329d3c0..0000000
--- a/src/models/lis-histogram-data-model.ts
+++ /dev/null
@@ -1,7 +0,0 @@
-/**
- * An object for histogram data.
- */
-export type HistogramDataModel = {
-  name: string;
-  count: number;
-};
diff --git a/src/vis/lis-histogram-element.ts b/src/vis/lis-histogram-element.ts
index 000789b..cf44420 100644
--- a/src/vis/lis-histogram-element.ts
+++ b/src/vis/lis-histogram-element.ts
@@ -2,9 +2,14 @@ import {LitElement, html} from 'lit';
 import {customElement, property, state} from 'lit/decorators.js';
 import {Ref, createRef, ref} from 'lit/directives/ref.js';
 import {globalSubstitution} from '../utils/decorators';
-import {HistogramDataModel} from '../models';
+//import {HistogramDataModel} from '../models';
 
 declare const d3: any;
+
+export type HistogramDataModel = {
+  name: string;
+  count: number;
+};
 //import * as d3 from 'd3';
 
 /**