diff --git a/build/media_source/system/js/fields/modal-content-select-field.js b/build/media_source/system/js/fields/modal-content-select-field.es6.js
similarity index 100%
rename from build/media_source/system/js/fields/modal-content-select-field.js
rename to build/media_source/system/js/fields/modal-content-select-field.es6.js
diff --git a/build/media_source/system/js/modal-content-select.js b/build/media_source/system/js/modal-content-select.es6.js
similarity index 100%
rename from build/media_source/system/js/modal-content-select.js
rename to build/media_source/system/js/modal-content-select.es6.js