diff --git a/platform/srf06-cc26xx/sensortag/bmp-280-sensor.c b/platform/srf06-cc26xx/sensortag/bmp-280-sensor.c
index a6e525cb1..fac0b2819 100644
--- a/platform/srf06-cc26xx/sensortag/bmp-280-sensor.c
+++ b/platform/srf06-cc26xx/sensortag/bmp-280-sensor.c
@@ -88,7 +88,6 @@
 /*---------------------------------------------------------------------------*/
 /* Misc. */
 #define MEAS_DATA_SIZE                      6
-#define CALIB_DATA_SIZE                     24
 /*---------------------------------------------------------------------------*/
 #define RES_OFF                             0
 #define RES_ULTRA_LOW_POWER                 1
@@ -121,6 +120,7 @@ typedef struct bmp_280_calibration {
   int32_t t_fine;
 } bmp_280_calibration_t;
 /*---------------------------------------------------------------------------*/
+#define CALIB_DATA_SIZE (sizeof(bmp_280_calibration_t))
 static uint8_t calibration_data[CALIB_DATA_SIZE];
 /*---------------------------------------------------------------------------*/
 #define SENSOR_STATUS_DISABLED     0