diff --git a/src/annotation.js b/src/annotation.js
index 68efde04e..8aed34fb3 100644
--- a/src/annotation.js
+++ b/src/annotation.js
@@ -274,10 +274,7 @@ function drawElements(ctx, elements, caller) {
 
 function drawSubElements(ctx, elements, caller) {
   for (const el of elements) {
-    if (!isArray(el.elements)) {
-      continue;
-    }
-    for (const subElem of el.elements) {
+    for (const subElem of el.elements || []) {
       if (subElem.options.drawTime === caller) {
         subElem.draw(ctx);
       }