diff --git a/ChangeLog b/ChangeLog
index 13598ad5c..c743b0a1f 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+2009-12-05  Vladimir Serbinenko  <phcoder@gmail.com>
+
+	* configure.ac (TARGET_ASFLAGS): Add "-D<MACHINE>".
+
 2009-12-05  Carles Pina i Estany  <carles@pina.cat>
 
 	* util/grub-install.in: Install gettext .mo files.
diff --git a/configure.ac b/configure.ac
index 08667d976..b654adeed 100644
--- a/configure.ac
+++ b/configure.ac
@@ -122,6 +122,7 @@ case "$platform" in
   emu)		machine_CFLAGS="-DGRUB_MACHINE_EMU=1" ;;
 esac
 CFLAGS="$CFLAGS $machine_CFLAGS"
+TARGET_ASFLAGS="$TARGET_ASFLAGS $machine_CFLAGS"
 TARGET_CFLAGS="$TARGET_CFLAGS $machine_CFLAGS"
 
 AC_SUBST(host_cpu)