diff --git a/src/opengl/qgl.h b/src/opengl/qgl.h
index 6903d3278c..031bdf3317 100644
--- a/src/opengl/qgl.h
+++ b/src/opengl/qgl.h
@@ -59,25 +59,26 @@ QT_BEGIN_HEADER
 #endif
 
 #if defined(Q_OS_MAC)
+# if !defined(QT_NO_CORESERVICES)
 # include <OpenGL/gl.h>
-#elif defined(QT_OPENGL_ES_2)
-# if defined(Q_OS_MAC)
-#  include <OpenGLES/ES2/gl.h>
 # else
-#  include <GLES2/gl2.h>
+#  if defined(QT_OPENGL_ES_2)
+#   include <OpenGLES/ES2/gl.h>
+#  endif
 # endif
+#elif defined(QT_OPENGL_ES_2)
+# include <GLES2/gl2.h>
+# else
+# include <GL/gl.h>
+# endif
+
+#if defined(QT_OPENGL_ES_2)
 # ifndef GL_DOUBLE
 #  define GL_DOUBLE GL_FLOAT
 # endif
 # ifndef GLdouble
 typedef GLfloat GLdouble;
 # endif
-#else
-# if defined(Q_OS_MAC)
-#  include <OpenGL/gl.h>
-# else
-#  include <GL/gl.h>
-# endif
 #endif
 
 QT_BEGIN_NAMESPACE