diff --git a/api-generator/components/cascadeselect.js b/api-generator/components/cascadeselect.js
index acdda674c..47b8284db 100644
--- a/api-generator/components/cascadeselect.js
+++ b/api-generator/components/cascadeselect.js
@@ -31,7 +31,7 @@ const CascadeSelectProps = [
     },
     {
         name: "optionGroupChildren",
-        type: "string[]",
+        type: "array",
         default: "null",
         description: "Property name or getter function to retrieve the items of a group."
     },