diff --git a/variants/espresso_lite_v1/pins_arduino.h b/variants/espresso_lite_v1/pins_arduino.h
index 8d4bd0b77..7d8b8fdb0 100644
--- a/variants/espresso_lite_v1/pins_arduino.h
+++ b/variants/espresso_lite_v1/pins_arduino.h
@@ -30,6 +30,8 @@
 #define NUM_DIGITAL_PINS        17
 #define NUM_ANALOG_INPUTS       1
 
+#define ESPRESSO_LITE_VERSION   1
+
 #define analogInputToDigitalPin(p)  ((p > 0)?NOT_A_PIN:0)
 #define digitalPinToInterrupt(p)  	(((p) < EXTERNAL_NUM_INTERRUPTS)?p:NOT_A_PIN)
 #define digitalPinHasPWM(p)         (((p) < NUM_DIGITAL_PINS)?p:NOT_A_PIN)
diff --git a/variants/espresso_lite_v2/pins_arduino.h b/variants/espresso_lite_v2/pins_arduino.h
index 4d0dbb0bb..6ba21ad93 100644
--- a/variants/espresso_lite_v2/pins_arduino.h
+++ b/variants/espresso_lite_v2/pins_arduino.h
@@ -30,6 +30,8 @@
 #define NUM_DIGITAL_PINS        17
 #define NUM_ANALOG_INPUTS       1
 
+#define ESPRESSO_LITE_VERSION   2
+
 #define analogInputToDigitalPin(p)  ((p > 0)?NOT_A_PIN:0)
 #define digitalPinToInterrupt(p)  	(((p) < EXTERNAL_NUM_INTERRUPTS)?p:NOT_A_PIN)
 #define digitalPinHasPWM(p)         (((p) < NUM_DIGITAL_PINS)?p:NOT_A_PIN)