diff --git a/app/src/main/java/org/ntlab/acanthus_client/Acanthus.java b/app/src/main/java/org/ntlab/acanthus_client/Acanthus.java
index 3c78739..08f02fd 100644
--- a/app/src/main/java/org/ntlab/acanthus_client/Acanthus.java
+++ b/app/src/main/java/org/ntlab/acanthus_client/Acanthus.java
@@ -123,6 +123,7 @@
         SharedPreferences preferences = getSharedPreferences("prefData", MODE_PRIVATE);
         SharedPreferences.Editor editor = preferences.edit();
         editor.putInt("aid", aid);
+        this.aid = aid;
         editor.commit();
     }