diff --git a/ArcFormats/NitroPlus/ArcSteinsGate.cs b/ArcFormats/NitroPlus/ArcSteinsGate.cs
index 441adf5a..30f3a998 100644
--- a/ArcFormats/NitroPlus/ArcSteinsGate.cs
+++ b/ArcFormats/NitroPlus/ArcSteinsGate.cs
@@ -31,7 +31,7 @@ using System.ComponentModel.Composition;
 using GameRes.Formats.Strings;
 using GameRes.Utility;
 
-namespace GameRes.Formats
+namespace GameRes.Formats.NitroPlus
 {
     public class SteinsGateOptions : ResourceOptions
     {