diff --git a/components/doc/DocApiTable.vue b/components/doc/DocApiTable.vue
index 607089e1e..1a4819c33 100644
--- a/components/doc/DocApiTable.vue
+++ b/components/doc/DocApiTable.vue
@@ -53,8 +53,8 @@
                                 </template>
                             </template>
 
-                            <div v-else-if="(k === 'default' && v !== '') || k === 'returnType'" :id="id + '.' + k" :class="['doc-option-props', optionPropClass]">
-                                {{ v }}
+                            <div v-else-if="k === 'default' || k === 'returnType'" :id="id + '.' + k" :class="['doc-option-props', optionPropClass]">
+                                {{ v === '' || v === undefined ? 'null' : v }}
                             </div>
 
                             <span v-else :id="id + '.' + k"> {{ v }} </span>