diff --git a/measurement.py b/measurement.py
index 2a45ab5..d6e2c8b 100644
--- a/measurement.py
+++ b/measurement.py
@@ -39,7 +39,7 @@ def measure_all_sensors(debug, filtered_temperature, ds18b20Sensors, bme680Senso
                     # if we have at leat one filtered value we can upload
                     ds18b20_temperature = filtered_temperature[sensorIndex].pop()
                     if sensor["ts_field"] and ds18b20_temperature is not None:
-                        if 'offset' in sensor:
+                        if 'offset' in sensor and sensor["offset"] is not None:
                             ds18b20_temperature = ds18b20_temperature-float(sensor["offset"])
                         ds18b20_temperature = float("{0:.2f}".format(ds18b20_temperature)) # round to two decimals
                         ts_fields.update({sensor["ts_field"]: ds18b20_temperature})
@@ -47,8 +47,9 @@ def measure_all_sensors(debug, filtered_temperature, ds18b20Sensors, bme680Senso
                     # Case for filtered_temperature was not filled, use direct measured temperture in this case
                     ds18b20_temperature = measure_temperature(sensor)
                     if sensor["ts_field"] and ds18b20_temperature is not None:
-                        if 'offset' in sensor:
+                        if 'offset' in sensor and sensor["offset"] is not None:
                             ds18b20_temperature = ds18b20_temperature-float(sensor["offset"])
+                        ds18b20_temperature = float("{0:.2f}".format(ds18b20_temperature)) # round to two decimals
                         ts_fields.update({sensor["ts_field"]: ds18b20_temperature})
         except Exception as e:
             error_log(e, "Unhandled Exception in measure_all_sensors / ds18b20Sensors")
diff --git a/read_bme280.py b/read_bme280.py
index 2d9d2d5..c76b08f 100644
--- a/read_bme280.py
+++ b/read_bme280.py
@@ -13,7 +13,7 @@ def measure_bme280(ts_sensor):
         # ThingSpeak fields
         # Create returned dict if ts-field is defined
         if 'ts_field_temperature' in ts_sensor and isinstance(temperature, (int, float)):
-            if 'offset' in ts_sensor and isinstance(ts_sensor["offset"], (int, float)):
+            if 'offset' in ts_sensor and ts_sensor["offset"] is not None:
                 temperature = temperature-ts_sensor["offset"]
             fields[ts_sensor["ts_field_temperature"]] = round(temperature, 2)
         if 'ts_field_humidity' in ts_sensor and isinstance(humidity, (int, float)):
diff --git a/read_dht.py b/read_dht.py
index a2200ce..65de565 100644
--- a/read_dht.py
+++ b/read_dht.py
@@ -26,10 +26,10 @@ def measure_dht(ts_sensor):
 
             # Create returned dict if ts-field is defined
             if 'ts_field_temperature' in ts_sensor and temperature is not None:
+                if 'offset' in ts_sensor and ts_sensor["offset"] is not None:
+                    temperature = temperature-float(ts_sensor["offset"])
                 # limit to 2 digits
                 temperature = float("{0:.2f}".format(temperature))
-                if 'offset' in ts_sensor:
-                        temperature = temperature-float(ts_sensor["offset"])
                 fields[ts_sensor["ts_field_temperature"]] = temperature
             if 'ts_field_humidity' in ts_sensor and humidity is not None:
                 # limit to 2 digits