diff --git a/sensors/main.py b/sensors/main.py
index 72fd14f..043f2b0 100644
--- a/sensors/main.py
+++ b/sensors/main.py
@@ -178,7 +178,7 @@ def read_bme(c, sensor, alt_m=None):
         p_rate, p_label = get_pressure_trend(c['PRESSURE_TREND_WINDOW'])
         dp = round(t - (100-rh)/5.0, 2)
         write(c, 'environment', {
-            'temperature':            round(t - c[''], 2),
+            'temperature':            round(t - c['TEMP_CALIBRATION'], 2),
             'humidity':               round(rh, 2),
             'dew_point':              dp,
             'pressure_hpa':           round(p, 2),