diff --git a/src/main/java/org/codelibs/fess/app/web/admin/user/CreateForm.java b/src/main/java/org/codelibs/fess/app/web/admin/user/CreateForm.java
index f4a5fea87..8c8d37008 100644
--- a/src/main/java/org/codelibs/fess/app/web/admin/user/CreateForm.java
+++ b/src/main/java/org/codelibs/fess/app/web/admin/user/CreateForm.java
@@ -44,7 +44,6 @@ public class CreateForm implements Serializable {
     @Size(max = 100)
     public String confirmPassword;
 
-    @Required
     @Size(max = 1000)
     public String surname;