diff --git a/Uriagekun/Lib/IO/MyRepository.cs b/Uriagekun/Lib/IO/MyRepository.cs
index 3ab01c3..fe548fa 100644
--- a/Uriagekun/Lib/IO/MyRepository.cs
+++ b/Uriagekun/Lib/IO/MyRepository.cs
@@ -29,7 +29,7 @@ public class MyRepository
         };
 
         var ret = await this.database.InsertAsync(data).ConfigureAwait(false);
-        return (int) ret;
+        return (int) (long) ret;
     }
 
     /// <summary>