1 files changed, 1 insertions, 1 deletions

diff --git a/source/helpers/calculate-css-calc-string.test.ts b/source/helpers/calculate-css-calc-string.test.ts
index c3d86439..fb670a37 100644
--- a/source/helpers/calculate-css-calc-string.test.ts
+++ b/source/helpers/calculate-css-calc-string.test.ts
@@ -1,6 +1,6 @@
 import {test, assert} from 'vitest';
 
-import calculateCssCalcString from './calculate-css-calc-string';
+import calculateCssCalcString from './calculate-css-calc-string.js';
 
 test('calculateCssCalcString', () => {
 	assert.equal(calculateCssCalcString('calc(1px)'), 1);