# GLEW initialization must be done after glfwOpenWindow

**URL:** <https://discourse.glfw.org/t/glew-initialization-must-be-done-after-glfwopenwindow/515>\
**Category:** support\
**Created:** [December 7, 2012, 11:57pm UTC](https://discourse.glfw.org/t/glew-initialization-must-be-done-after-glfwopenwindow/515 "2012-12-07T23:57:39Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![system](https://canada1.discourse-cdn.com/flex035/uploads/glfw/original/1X/b8cdefe6b61b8d5aee6c43b2c56e9cf5eabecfe4.svg) [@system](https://discourse.glfw.org/u/system)\
**Post date:** [December 7, 2012, 11:57pm UTC](https://discourse.glfw.org/t/glew-initialization-must-be-done-after-glfwopenwindow/515/1 "2012-12-07T23:57:39Z")

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**anonymous** wrote on [Friday, December 07, 2012](https://sourceforge.net/p/glfw/discussion/247562/thread/2a2843e4/#b382):

Hi,

I think the FAQ item about GLEW should be modified to include this information : intialization of GLEW will fail if glewInit() is called before glfwOpenWindow().

Kalith.