diff --git a/helium-mapper/helium-mapper.ino b/helium-mapper/helium-mapper.ino
index 685dc76..4823d88 100644
--- a/helium-mapper/helium-mapper.ino
+++ b/helium-mapper/helium-mapper.ino
@@ -21,8 +21,9 @@
 SFE_UBLOX_GPS myGPS;
 Adafruit_BMP085 bmp; //temp and pressure sensor
 LIS3DH myIMU; //accelerometer
+#define SSD1306_WHITE 1   ///< Draw 'on' pixels
 
-#define DEVMODE // Development mode. Uncomment to enable for debugging.
+//#define DEVMODE // Development mode. Uncomment to enable for debugging.
 
 boolean airborne = false; //if you want to put the tracker on an airborne (balloon, drone, plane, etc.) device, set this variable true;
 uint8_t measurementSystem = 0; //0 for metric (meters, km, Celcius, etc.), 1 for imperial (feet, mile, Fahrenheit,etc.) 
diff --git a/lora-asset-tracker-rx/lora-asset-tracker-rx.ino b/lora-asset-tracker-rx/lora-asset-tracker-rx.ino
index 86ebaaa..25aef03 100644
--- a/lora-asset-tracker-rx/lora-asset-tracker-rx.ino
+++ b/lora-asset-tracker-rx/lora-asset-tracker-rx.ino
@@ -24,6 +24,7 @@ SX1262 lora = new Module(8, 3, 9, 2);
 #define GpsOFF digitalWrite(GpsPwr, HIGH);
 SFE_UBLOX_GPS myGPS;
 Adafruit_BMP085 bmp;
+#define SSD1306_WHITE 1   ///< Draw 'on' pixels
 
 //#define DEVMODE // Development mode. Uncomment to enable for debugging.
 
diff --git a/lora-asset-tracker-tx/lora-asset-tracker-tx.ino b/lora-asset-tracker-tx/lora-asset-tracker-tx.ino
index dd8f16f..f3d53fd 100644
--- a/lora-asset-tracker-tx/lora-asset-tracker-tx.ino
+++ b/lora-asset-tracker-tx/lora-asset-tracker-tx.ino
@@ -21,6 +21,7 @@ SX1262 lora = new Module(8, 3, 9, 2);
 SFE_UBLOX_GPS myGPS;
 Adafruit_BMP085 bmp;
 LIS3DH myIMU; //Default constructor is I2C, addr 0x19.
+#define SSD1306_WHITE 1   ///< Draw 'on' pixels
 
 //#define DEVMODE // Development mode. Uncomment to enable for debugging.
 
diff --git a/lorawan-otaa-asset-tracker/lorawan-otaa-asset-tracker.ino b/lorawan-otaa-asset-tracker/lorawan-otaa-asset-tracker.ino
index f3dc38b..7d3d820 100644
--- a/lorawan-otaa-asset-tracker/lorawan-otaa-asset-tracker.ino
+++ b/lorawan-otaa-asset-tracker/lorawan-otaa-asset-tracker.ino
@@ -21,6 +21,7 @@
 SFE_UBLOX_GPS myGPS;
 Adafruit_BMP085 bmp; //temp and pressure sensor
 LIS3DH myIMU; //accelerometer
+#define SSD1306_WHITE 1   ///< Draw 'on' pixels
 
 //#define DEVMODE // Development mode. Uncomment to enable for debugging.