diff --git a/klippy/pins.py b/klippy/pins.py
index 327e1fe2..c7dcb868 100644
--- a/klippy/pins.py
+++ b/klippy/pins.py
@@ -31,7 +31,7 @@ def beaglebone_pins():
     return gpios
 
 MCU_PINS = {
-    "atmega168": port_pins(4), "atmega328": port_pins(4),
+    "atmega168": port_pins(5), "atmega328": port_pins(5),
     "atmega644p": port_pins(4), "atmega1284p": port_pins(4),
     "at90usb1286": port_pins(6),
     "atmega1280": port_pins(12), "atmega2560": port_pins(12),
@@ -95,6 +95,7 @@ Arduino_Due_analog = [
 
 Arduino_from_mcu = {
     "atmega168": (Arduino_standard, Arduino_analog_standard),
+    "atmega328": (Arduino_standard, Arduino_analog_standard),
     "atmega644p": (Sanguino, Sanguino_analog),
     "atmega1280": (Arduino_mega, Arduino_analog_mega),
     "atmega2560": (Arduino_mega, Arduino_analog_mega),