diff --git a/src/common/InputHandler.test.ts b/src/common/InputHandler.test.ts
index 8cc1bc97f..eff8c76de 100644
--- a/src/common/InputHandler.test.ts
+++ b/src/common/InputHandler.test.ts
@@ -1695,7 +1695,7 @@ describe('InputHandler', () => {
   describe('OSC', () => {
     it('should ignore incorrect Ansi color change data', () => {
       // this is testing a private method
-      const parseAnsiColorChange = inputHandler["_parseAnsiColorChange"];
+      const parseAnsiColorChange = inputHandler['_parseAnsiColorChange'];
 
       assert.isNull(parseAnsiColorChange('17;rgb:a/b/c'));
       assert.isNull(parseAnsiColorChange('17;rgb:#aabbcc'));