diff --git a/sysdeps/unix/bsd/sun/sunos4/utsnamelen.h b/sysdeps/unix/bsd/sun/sunos4/utsnamelen.h
index f657d04ce4..31473cf4ea 100644
--- a/sysdeps/unix/bsd/sun/sunos4/utsnamelen.h
+++ b/sysdeps/unix/bsd/sun/sunos4/utsnamelen.h
@@ -1 +1 @@
-#include <sysdeps/unix/sysv/utsnamelen.h>
+#define _UTSNAME_LENGTH 9