diff --git a/include/InitShader.h b/include/InitShader.h
index e689989..f7450a7 100644
--- a/include/InitShader.h
+++ b/include/InitShader.h
@@ -1,7 +1,7 @@
 #ifndef __INITSHADER_H__
 #define __INITSHADER_H__
 
-#include <GL/GL.h>
+#include <GL/gl.h>
 
 GLuint InitShader( const char* computeShaderFile);
 GLuint InitShader( const char* vertexShaderFile, const char* fragmentShaderFile );