diff --git a/src/LibHac/IO/NullFile.cs b/src/LibHac/IO/NullFile.cs
index f3a7946f..c2f3337e 100644
--- a/src/LibHac/IO/NullFile.cs
+++ b/src/LibHac/IO/NullFile.cs
@@ -4,8 +4,12 @@ namespace LibHac.IO
 {
     public class NullFile : FileBase
     {
-        public NullFile() { }
-        public NullFile(long length) => Length = length;
+        public NullFile()
+        {
+            Mode = OpenMode.ReadWrite;
+        }
+
+        public NullFile(long length) : this() => Length = length;
 
         private long Length { get; }