diff --git a/src/vs/editor/test/common/model/bracketPairColorizer/getBracketPairsInRange.test.ts b/src/vs/editor/test/common/model/bracketPairColorizer/getBracketPairsInRange.test.ts
index e44874f2b7e..2b05427a4ba 100644
--- a/src/vs/editor/test/common/model/bracketPairColorizer/getBracketPairsInRange.test.ts
+++ b/src/vs/editor/test/common/model/bracketPairColorizer/getBracketPairsInRange.test.ts
@@ -23,9 +23,9 @@ suite('Bracket Pair Colorizer - getBracketPairsInRange', () => {
 		const instantiationService = createModelServices(store);
 		const languageConfigurationService = instantiationService.get(ILanguageConfigurationService);
 		const languageService = instantiationService.get(ILanguageService);
-		languageService.registerLanguage({
+		store.add(languageService.registerLanguage({
 			id: languageId,
-		});
+		}));
 
 		const encodedMode1 = languageService.languageIdCodec.encodeLanguageId(languageId);
 		const document = new TokenizedDocument([