diff --git a/tests/cases/fourslash/fourslash.ts b/tests/cases/fourslash/fourslash.ts
index 2b270dc73f3..08883f163f2 100644
--- a/tests/cases/fourslash/fourslash.ts
+++ b/tests/cases/fourslash/fourslash.ts
@@ -237,6 +237,7 @@ declare namespace FourSlashInterface {
         printBreakpointAtCurrentLocation(): void;
         printNameOrDottedNameSpans(pos: number): void;
         printErrorList(): void;
+        printNavigationBar(): void;
         printNavigationItems(searchValue?: string): void;
         printScriptLexicalStructureItems(): void;
         printReferences(): void;