Problem with glut.h

There seems to be a problem with my IDE. I am using dev c++ 4.9.9.2 and whenever i try to include glut.h i get this error

45 C:\Dev-Cpp\include\GL\glut.h redeclaration of C++ built-in type `short’

The line that it is bugging me about is

typedef unsigned short wchar_t;

what is going wrong?