diff --git a/converter/ps2_usb/Makefile.unimap.rev2 b/converter/ps2_usb/Makefile.unimap.rev2
index 5579f701..a3bc6399 100644
--- a/converter/ps2_usb/Makefile.unimap.rev2
+++ b/converter/ps2_usb/Makefile.unimap.rev2
@@ -1,5 +1,6 @@
 TARGET = ps2_usb_rev2_unimap
 UNIMAP_ENABLE = yes
 KEYMAP_SECTION_ENABLE = yes
+#LUFA_DEBUG_SUART = yes
 
 include Makefile.rev2
diff --git a/converter/ps2_usb/config_rev2.h b/converter/ps2_usb/config_rev2.h
index 2e91838e..e7224d96 100644
--- a/converter/ps2_usb/config_rev2.h
+++ b/converter/ps2_usb/config_rev2.h
@@ -82,4 +82,13 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #define PS2_INT_VECT    INT1_vect
 #endif
 
+#ifdef LUFA_DEBUG_SUART
+#   define SUART_OUT_DDR   DDRD
+#   define SUART_OUT_PORT  PORTD
+#   define SUART_OUT_BIT   4
+#   define SUART_IN_DDR    DDRD
+#   define SUART_IN_PIN    PIND
+#   define SUART_IN_BIT    4
+#endif
+
 #endif