diff --git a/packages/core/ui/core/properties/index.ts b/packages/core/ui/core/properties/index.ts
index 329aa5390..2c0eaf5a8 100644
--- a/packages/core/ui/core/properties/index.ts
+++ b/packages/core/ui/core/properties/index.ts
@@ -1,4 +1,3 @@
-import * as reduceCSSCalc from 'reduce-css-calc';
 
 import { ViewBase } from '../view-base';
 
@@ -153,7 +152,7 @@ export function _evaluateCssCalcExpression(value: string) {
 
 	if (isCssCalcExpression(value)) {
 		// WORKAROUND: reduce-css-calc can't handle the dip-unit.
-		return reduceCSSCalc(value.replace(/([0-9]+(\.[0-9]+)?)dip\b/g, '$1'));
+		return require('reduce-css-calc')(value.replace(/([0-9]+(\.[0-9]+)?)dip\b/g, '$1'));
 	} else {
 		return value;
 	}