diff --git a/Source/Examples/Tutorial/T02_Vertex_Arrays.cs b/Source/Examples/Tutorial/T02_Vertex_Arrays.cs
index a6878462..a70a40ef 100644
--- a/Source/Examples/Tutorial/T02_Vertex_Arrays.cs
+++ b/Source/Examples/Tutorial/T02_Vertex_Arrays.cs
@@ -61,7 +61,7 @@ namespace Examples.Tutorial
 
         public override void OnLoad(EventArgs e)
         {
-            GL.Enable(EnableCap.Texture2d);
+            GL.Enable(EnableCap.Texture2D);
 
             GL.ClearColor(Color.CadetBlue);
             GL.Enable(EnableCap.DepthTest);
diff --git a/Source/Examples/Tutorial/Textures.cs b/Source/Examples/Tutorial/Textures.cs
index 5bb992df..bb590573 100644
--- a/Source/Examples/Tutorial/Textures.cs
+++ b/Source/Examples/Tutorial/Textures.cs
@@ -40,23 +40,23 @@ namespace Examples.Tutorial
         public override void OnLoad(EventArgs e)
         {
             GL.ClearColor(Color.SteelBlue);
-            GL.Enable(EnableCap.Texture2d);
+            GL.Enable(EnableCap.Texture2D);
 
             GL.Hint(HintTarget.PerspectiveCorrectionHint, HintMode.Nicest);
             
             GL.GenTextures(1, out texture);
-            GL.BindTexture(TextureTarget.Texture2d, texture);
+            GL.BindTexture(TextureTarget.Texture2D, texture);
 
             BitmapData data = bitmap.LockBits(new Rectangle(0, 0, bitmap.Width, bitmap.Height),
                 ImageLockMode.ReadOnly, System.Drawing.Imaging.PixelFormat.Format32bppArgb);
 
-            GL.TexImage2D(TextureTarget.Texture2d, 0, PixelInternalFormat.Rgba, data.Width, data.Height, 0,
+            GL.TexImage2D(TextureTarget.Texture2D, 0, PixelInternalFormat.Rgba, data.Width, data.Height, 0,
                 OpenTK.OpenGL.Enums.PixelFormat.Bgra, PixelType.UnsignedByte, data.Scan0);
             
             bitmap.UnlockBits(data);
 
-            GL.TexParameter(TextureTarget.Texture2d, TextureParameterName.TextureMinFilter, (int)TextureMinFilter.Linear);
-            GL.TexParameter(TextureTarget.Texture2d, TextureParameterName.TextureMagFilter, (int)TextureMagFilter.Linear);
+            GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMinFilter, (int)TextureMinFilter.Linear);
+            GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMagFilter, (int)TextureMagFilter.Linear);
         }
 
         #endregion
@@ -116,7 +116,7 @@ namespace Examples.Tutorial
 
             GL.MatrixMode(MatrixMode.Modelview);
             GL.LoadIdentity();
-            GL.BindTexture(TextureTarget.Texture2d, texture);
+            GL.BindTexture(TextureTarget.Texture2D, texture);
 
             GL.Begin(BeginMode.Quads);