diff --git a/src/auto/configure b/src/auto/configure
index d0bee7b..f8f3598 100755
--- a/src/auto/configure
+++ b/src/auto/configure
@@ -6777,9 +6777,9 @@
 	{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $rubyhdrdir" >&5
 $as_echo "$rubyhdrdir" >&6; }
 	RUBY_CFLAGS="-I$rubyhdrdir"
-        rubyarch=`$vi_cv_path_ruby -r rbconfig -e "print $ruby_rbconfig::CONFIG['arch']"`
-        if test -d "$rubyhdrdir/$rubyarch"; then
-          RUBY_CFLAGS="$RUBY_CFLAGS -I$rubyhdrdir/$rubyarch"
+        rubyarchdir=`$vi_cv_path_ruby -r rbconfig -e "print ($ruby_rbconfig::CONFIG.has_key? 'rubyarchhdrdir') ? $ruby_rbconfig::CONFIG['rubyarchhdrdir'] : '$rubyhdrdir/'+$ruby_rbconfig::CONFIG['arch']"`
+        if test -d "$rubyarchdir"; then
+          RUBY_CFLAGS="$RUBY_CFLAGS -I$rubyarchdir"
         fi
         rubyversion=`$vi_cv_path_ruby -r rbconfig -e "print $ruby_rbconfig::CONFIG['ruby_version'].gsub(/\./, '')[0,2]"`
 	if test "X$rubyversion" = "X"; then