/* System includes */
-#ifdef _VMS_
+#ifndef _VMS_
-#elif WINDOWS
+#ifdef WINDOWS
#ifdef YNETINCLUDE
#include <winsock.h>
#endif
-#else
+#else /* #ifdef WINDOWS */
/*
* Standard Unix headers
*/
#endif
#endif
+#endif /* ifndef _VMS_ */
#include <xmalloc.h>