diff --git a/Source/Examples/Tutorial/T10_GLSL_Cube.cs b/Source/Examples/Tutorial/T10_GLSL_Cube.cs
index 44f68eb4..6bb79632 100644
--- a/Source/Examples/Tutorial/T10_GLSL_Cube.cs
+++ b/Source/Examples/Tutorial/T10_GLSL_Cube.cs
@@ -135,6 +135,20 @@ void main()
 
         #endregion
 
+        #region OnUnload
+
+        public override void OnUnload(EventArgs e)
+        {
+            if (shader_program != 0)
+                GL.DeleteProgram(shader_program);
+            if (fragment_shader_object != 0)
+                GL.DeleteShader(fragment_shader_object);
+            if (vertex_shader_object != 0)
+                GL.DeleteShader(vertex_shader_object);
+        }
+
+        #endregion
+
         #region OnResize
 
         /// <summary>
@@ -231,18 +245,5 @@ void main()
         }
 
         #endregion
-
-        #region public override void Dispose()
-
-        public override void Dispose()
-        {
-            GL.DeleteProgram(shader_program);
-            GL.DeleteShader(fragment_shader_object);
-            GL.DeleteShader(vertex_shader_object);
-
-            base.Dispose();
-        }
-
-        #endregion
     }
 }