diff --git a/packages/dropdown/src/dropdown-menu.vue b/packages/dropdown/src/dropdown-menu.vue
index 8f2c4b6a1..6b69aec47 100644
--- a/packages/dropdown/src/dropdown-menu.vue
+++ b/packages/dropdown/src/dropdown-menu.vue
@@ -24,7 +24,7 @@
 
     data() {
       return {
-        size: this.dropdown.size
+        size: this.dropdown.dropdownSize
       };
     },