diff --git a/configure.in b/configure.in
index 30c215b7d..e64c318a4 100644
--- a/configure.in
+++ b/configure.in
@@ -348,7 +348,11 @@ AC_SUBST(PREFERRED_STACK_BOUNDARY)
 
 # Checks for header files.
 AC_HEADER_STDC
-AC_CHECK_HEADERS([fcntl.h stdlib.h string.h sys/socket.h sys/statfs.h sys/time.h sys/endian.h endian.h termios.h unistd.h utime.h linux/fb.h linux/mii.h mqueue.h linux/compiler.h])
+AC_CHECK_HEADERS([fcntl.h stdlib.h string.h sys/socket.h sys/statfs.h sys/time.h sys/endian.h endian.h termios.h unistd.h utime.h linux/fb.h mqueue.h linux/compiler.h])
+
+AC_CHECK_HEADERS([linux/mii.h])
+AC_MSG_RESULT([           (Nb: Valgrind users, please ignore any warnings about mii.h)])
+AC_MSG_RESULT([           (They are not important)])
 
 # Checks for typedefs, structures, and compiler characteristics.
 AC_TYPE_UID_T