diff --git a/src/DotRecast.Core/RcMatrix4x4f.cs b/src/DotRecast.Core/RcMatrix4x4f.cs
index 26c2d00..2cfd032 100644
--- a/src/DotRecast.Core/RcMatrix4x4f.cs
+++ b/src/DotRecast.Core/RcMatrix4x4f.cs
@@ -1,5 +1,4 @@
 using System;
-using System.Numerics;
 
 namespace DotRecast.Core
 {
diff --git a/src/DotRecast.Recast.Demo/Draw/DebugDraw.cs b/src/DotRecast.Recast.Demo/Draw/DebugDraw.cs
index 28b7998..c67947a 100644
--- a/src/DotRecast.Recast.Demo/Draw/DebugDraw.cs
+++ b/src/DotRecast.Recast.Demo/Draw/DebugDraw.cs
@@ -19,7 +19,6 @@ freely, subject to the following restrictions:
 */
 
 using System;
-using System.Numerics;
 using Silk.NET.OpenGL;
 using DotRecast.Core;
 using DotRecast.Recast.Toolset.Builder;
diff --git a/src/DotRecast.Recast.Demo/UI/RcLogView.cs b/src/DotRecast.Recast.Demo/UI/RcLogView.cs
index 85e5bec..a308895 100644
--- a/src/DotRecast.Recast.Demo/UI/RcLogView.cs
+++ b/src/DotRecast.Recast.Demo/UI/RcLogView.cs
@@ -3,9 +3,7 @@ using System.Collections.Concurrent;
 using System.Collections.Generic;
 using System.Linq;
 using System.Numerics;
-using System.Text;
 using DotRecast.Recast.Demo.Logging.Sinks;
-using DotRecast.Recast.Demo.Tools;
 using DotRecast.Recast.Demo.UI.ViewModels;
 using ImGuiNET;
 
diff --git a/src/DotRecast.Recast.Demo/UI/RcSettingsView.cs b/src/DotRecast.Recast.Demo/UI/RcSettingsView.cs
index 153a4af..34f0030 100644
--- a/src/DotRecast.Recast.Demo/UI/RcSettingsView.cs
+++ b/src/DotRecast.Recast.Demo/UI/RcSettingsView.cs
@@ -17,14 +17,11 @@ freely, subject to the following restrictions:
 */
 
 using System;
-using System.Collections.Generic;
 using System.IO;
-using System.Linq;
 using System.Numerics;
 using DotRecast.Core;
 using DotRecast.Recast.Demo.Draw;
 using DotRecast.Recast.Demo.Messages;
-using DotRecast.Recast.Toolset;
 using ImGuiNET;
 using Serilog;
 
diff --git a/src/DotRecast.Recast.Demo/UI/RcToolsetView.cs b/src/DotRecast.Recast.Demo/UI/RcToolsetView.cs
index 55fe982..2c019f0 100644
--- a/src/DotRecast.Recast.Demo/UI/RcToolsetView.cs
+++ b/src/DotRecast.Recast.Demo/UI/RcToolsetView.cs
@@ -18,11 +18,9 @@ freely, subject to the following restrictions:
 3. This notice may not be removed or altered from any source distribution.
 */
 
-using System;
 using System.Numerics;
 using DotRecast.Core;
 using DotRecast.Recast.Demo.Tools;
-using DotRecast.Recast.Toolset;
 using ImGuiNET;
 
 namespace DotRecast.Recast.Demo.UI;