diff --git a/src/js/controls.js b/src/js/controls.js
index 17d197c5..879fd3fc 100644
--- a/src/js/controls.js
+++ b/src/js/controls.js
@@ -1233,7 +1233,7 @@ const controls = {
         // Inject controls HTML
         if (utils.is.element(container)) {
             target.appendChild(container);
-        } else {
+        } else if (container) {
             target.insertAdjacentHTML('beforeend', container);
         }