diff --git a/is-js/is-js-tests.ts b/is_js/is_js-tests.ts
similarity index 99%
rename from is-js/is-js-tests.ts
rename to is_js/is_js-tests.ts
index 44940bee1d..d90728e85e 100644
--- a/is-js/is-js-tests.ts
+++ b/is_js/is_js-tests.ts
@@ -1,4 +1,4 @@
-/// <reference path="is-js.d.ts" />
+/// <reference path="is_js.d.ts" />
 
 //#region Type checks
 
diff --git a/is-js/is-js.d.ts b/is_js/is_js.d.ts
similarity index 100%
rename from is-js/is-js.d.ts
rename to is_js/is_js.d.ts