diff --git a/LibHac/Save/Savefile.cs b/LibHac/Save/Savefile.cs
index 172bfe49..9c305b97 100644
--- a/LibHac/Save/Savefile.cs
+++ b/LibHac/Save/Savefile.cs
@@ -154,6 +154,7 @@ namespace LibHac.Save
 
             headerStream.Position = 0;
             headerStream.Write(cmac, 0, 0x10);
+            headerStream.Flush();
 
             return true;
         }