diff --git a/app/src/main/java/org/ntlab/amaryllis/client/LoginActivity.java b/app/src/main/java/org/ntlab/amaryllis/client/LoginActivity.java
index 8b210d4..539c8b6 100644
--- a/app/src/main/java/org/ntlab/amaryllis/client/LoginActivity.java
+++ b/app/src/main/java/org/ntlab/amaryllis/client/LoginActivity.java
@@ -10,6 +10,7 @@
 import android.widget.Button;
 import android.widget.EditText;
 import android.widget.TextView;
+import android.widget.Toast;
 
 import org.ntlab.amaryllis.client.entities.SignUpJson;
 import org.ntlab.amaryllis.client.resources.AccountsRest;
@@ -50,6 +51,7 @@
                 call.enqueue(new Callback<SignUpJson>(){
                     @Override
                     public void onResponse(Call<SignUpJson> call, Response<SignUpJson> response) {
+                        if (response.isSuccessful()) {
                         SignUpJson signUpJson =response.body();
                         Amaryllis app = (Amaryllis) getApplication();
                         app.setToken(signUpJson.getToken());
@@ -59,6 +61,10 @@
                         Intent intent = new Intent(getApplication(), MainActivity.class);
                         startActivity(intent);
                         finish();
+                        }else {
+                            Toast.makeText(LoginActivity.this,
+                                    "nameもしくはパスワードが違います", Toast.LENGTH_SHORT).show();
+                        }
                     }
 
                     @Override