diff --git a/lib/index.js b/lib/index.js
index e59b4e5..b12b96a 100644
--- a/lib/index.js
+++ b/lib/index.js
@@ -41,6 +41,9 @@ module.exports = async function extractDefaults (cardscript) {
         }
         break
       case 'Collapsible':
+        if (element.id) {
+          applyDefaultValue(defaultValues, defaultValue === true, apiLookupPath, cardListPath, element.id)
+        }
         element.card.body.forEach(parseElement)
         break
       case 'Input.ApiLookup': {