diff --git a/configure b/configure
index 271723760f..641861d047 100755
--- a/configure
+++ b/configure
@@ -1079,7 +1079,7 @@ if test $tune != "generic"; then
             CFLAGS="$CFLAGS -march=$tune"
         ;;
         sparc64)
-            CFLAGS="$CFLAGS -mcpu=ultrasparc -mtune=ultrasparc"
+            CFLAGS="$CFLAGS -mcpu=v9 -mtune=v9"
         ;;
         *)
         echo "WARNING: Unknown CPU \"$tune\", ignored."