diff --git a/Renderer/OpenGL/OpenGLView.swift b/Renderer/OpenGL/OpenGLView.swift
index fc67520..a91a82a 100644
--- a/Renderer/OpenGL/OpenGLView.swift
+++ b/Renderer/OpenGL/OpenGLView.swift
@@ -8,7 +8,7 @@
 
 import Foundation
 import Cocoa
-import OpenGL
+import GLKit
 import CoreVideo
 
 public class OpenGLView: NSOpenGLView, RenderingSurface {
@@ -36,6 +36,14 @@ public class OpenGLView: NSOpenGLView, RenderingSurface {
         }
     }
 
+    override public func prepareOpenGL() {
+        super.prepareOpenGL()
+
+        glClearColor(0.16, 0.17, 0.21, 1.0)
+        glEnable(GLenum(GL_DEPTH_TEST))
+        glDepthFunc(GLenum(GL_LESS))
+    }
+
     private func setupOpenGL() {
         guard !didSetupOpenGL else { return }
         defer { didSetupOpenGL = true }