diff --git a/src/FileUpload.vue b/src/FileUpload.vue
index 7b75677..db51d51 100644
--- a/src/FileUpload.vue
+++ b/src/FileUpload.vue
@@ -123,6 +123,7 @@ export default {
 
 
     drop: {
+      type: Boolean,
       default: false,
     },