diff --git a/component/charts/bar.tsx b/component/charts/bar.tsx
index 97cdc41..d2694bb 100644
--- a/component/charts/bar.tsx
+++ b/component/charts/bar.tsx
@@ -2,11 +2,11 @@ import React from 'react';
 import { Path } from 'react-native-svg';
 
 import { calculateBarOrigin, drawBarPath } from './custom-bar-utils';
-import { ScaleFunction } from './graph-types';
+import { ScaleBandType, ScaleLinearType, } from './graph-types';
 
 interface BarProps {
-  scaleX: ScaleFunction;
-  scaleY: ScaleFunction;
+  scaleX: ScaleBandType;
+  scaleY: ScaleLinearType;
   data: { value: number };
   barNumber: number;
   index: number;