diff --git a/Makefile b/Makefile
index 50fecf3..fa4c1f0 100644
--- a/Makefile
+++ b/Makefile
@@ -91,10 +91,10 @@ clean:
 	rm -rf *.o *.elf *.lst *.map *.sym *.lss *.eep *.srec *.bin *.hex *.al *.i *.s *~
 
 size: $(PROGRAM).elf
-	@echo "  SIZE                   Atmega168        Atmega328p"
-	@$(OBJDUMP) -h $^ | perl -ne '/.(text)\s+([0-9a-f]+)/ && do { $$a += eval "0x$$2" }; END { printf "    FLASH : %5d bytes  (%2d%% of %2dkb)    (%2d%% of %2dkb)\n", $$a, $$a * 100 / (14 * 1024), 14, $$a * 100 / (30 * 1024), 30 }'
-	@$(OBJDUMP) -h $^ | perl -ne '/.(data|bss)\s+([0-9a-f]+)/ && do { $$a += eval "0x$$2" }; END { printf "    RAM   : %5d bytes  (%2d%% of %2dkb)    (%2d%% of %2dkb)\n", $$a, $$a * 100 / (1 * 1024), 1, $$a * 100 / (2 * 1024), 2 }'
-	@$(OBJDUMP) -h $^ | perl -ne '/.(eeprom)\s+([0-9a-f]+)/ && do { $$a += eval "0x$$2" }; END { printf "    EEPROM: %5d bytes  (%2d%% of %2dkb)    (%2d%% of %2dkb)\n", $$a, $$a * 100 / (1 * 1024), 1, $$a * 100 / (2 * 1024), 2 }'
+	@echo "  SIZE                   Atmega168        Atmega328p       Atmega644"
+	@$(OBJDUMP) -h $^ | perl -ne '/.(text)\s+([0-9a-f]+)/ && do { $$a += eval "0x$$2" }; END { printf "    FLASH : %5d bytes  (%2d%% of %2dkb)    (%2d%% of %2dkb)    (%2d%% of %2dkb)\n", $$a, $$a * 100 / (14 * 1024), 14, $$a * 100 / (30 * 1024), 30, $$a * 100 / (63 * 1024), 63 }'
+	@$(OBJDUMP) -h $^ | perl -ne '/.(data|bss)\s+([0-9a-f]+)/ && do { $$a += eval "0x$$2" }; END { printf "    RAM   : %5d bytes  (%2d%% of %2dkb)    (%2d%% of %2dkb)    (%2d%% of %2dkb)\n", $$a, $$a * 100 / (1 * 1024), 1, $$a * 100 / (2 * 1024), 2, $$a * 100 / (4 * 1024), 4 }'
+	@$(OBJDUMP) -h $^ | perl -ne '/.(eeprom)\s+([0-9a-f]+)/ && do { $$a += eval "0x$$2" }; END { printf "    EEPROM: %5d bytes  (%2d%% of %2dkb)    (%2d%% of %2dkb)    (%2d%% of %2dkb)\n", $$a, $$a * 100 / (1 * 1024), 1, $$a * 100 / (2 * 1024), 2, $$a * 100 / (2 * 1024), 2 }'
 
 config.h: config.h.dist
 	@echo "Please review config.h, as config.h.dist is more recent."