diff --git a/wxPython/demo/GLCanvas.py b/wxPython/demo/GLCanvas.py
index 89b984df69..dd8716e63e 100644
--- a/wxPython/demo/GLCanvas.py
+++ b/wxPython/demo/GLCanvas.py
@@ -219,7 +219,7 @@ class ConeCanvas(MyCanvasBase):
         glLight(GL_LIGHT0, GL_DIFFUSE, [1.0, 1.0, 1.0, 1.0])
         glLight(GL_LIGHT0, GL_SPECULAR, [1.0, 1.0, 1.0, 1.0])
         glLight(GL_LIGHT0, GL_POSITION, [1.0, 1.0, 1.0, 0.0])
-        glLightModel(GL_LIGHT_MODEL_AMBIENT, [0.2, 0.2, 0.2, 1.0])
+        glLightModelfv(GL_LIGHT_MODEL_AMBIENT, [0.2, 0.2, 0.2, 1.0])
         glEnable(GL_LIGHTING)
         glEnable(GL_LIGHT0)
         glDepthFunc(GL_LESS)
@@ -229,7 +229,8 @@ class ConeCanvas(MyCanvasBase):
         glMatrixMode(GL_MODELVIEW)
         # position viewer
         glTranslatef(0.0, 0.0, -2.0);
-
+        #
+        glutInit([])
 
 
     def OnDraw(self):