diff --git a/src/main/java/org/ntlab/nemophila/models/accounts/Account.java b/src/main/java/org/ntlab/nemophila/models/accounts/Account.java
index b681080..30d7cef 100644
--- a/src/main/java/org/ntlab/nemophila/models/accounts/Account.java
+++ b/src/main/java/org/ntlab/nemophila/models/accounts/Account.java
@@ -1,6 +1,7 @@
 package org.ntlab.nemophila.models.accounts;
 
 import com.fasterxml.jackson.annotation.JsonIgnore;
+import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import org.ntlab.nemophila.models.shops.Shop;
 
@@ -94,6 +95,7 @@
         posts.remove(pid);
     }
     //投稿数の取得
+    @JsonIgnoreProperties(ignoreUnknown=true)
     public int getPostsCount() {
         return posts.size();
     }