diff --git a/Firmware/pins_Rambo_1_3.h b/Firmware/pins_Rambo_1_3.h
index d684519e..b051c4f4 100644
--- a/Firmware/pins_Rambo_1_3.h
+++ b/Firmware/pins_Rambo_1_3.h
@@ -102,7 +102,7 @@
 
 #define SDCARDDETECT           15
 
-#define IR_SENSOR_PIN 62 //idler sensor @PK0 (digital pin 62/A8)
+#define IR_SENSOR_PIN 23 // idler sensor @PA1 (digital pin 23, "Z-MAX" connector)
 
 // Support for an 8 bit logic analyzer, for example the Saleae.
 // Channels 0-2 are fast, they could generate 2.667Mhz waveform with a software loop.