Problem with declare and use of global constant

Could somebody help me ?

I had declared a constant and I need that be global

#define SVCNAME TEXT("testit")
...
SERVICE_TABLE_ENTRY DispatchTable[] =
{
{ SVCNAME, (LPSERVICE_MAIN_FUNCTION) testit },
{ NULL, NULL }
};

and I got:

Error C2440 'inicializando': no se puede realizar la conversión de 'const wchar_t [7]' a 'LPWSTR' easyDB C:\Software\test1\test2\dllmain.cpp 60

I tried some ways of declare a global constant, also that be LPWSTR at time of the declaration.