diff --git libxfont2-clean/src/fc/fslibos.h libxfont2-workdir/src/fc/fslibos.h
index 1ef362d..3475a02 100644
--- libxfont2-clean/src/fc/fslibos.h
+++ libxfont2-workdir/src/fc/fslibos.h
@@ -60,7 +60,7 @@ from The Open Group.
 #   endif
 #  endif
 #  ifndef OPEN_MAX
-#   if defined(SVR4)
+#   if defined(SVR4) || defined(__vinix__)
 #    define OPEN_MAX 256
 #   else
 #    include <sys/param.h>
