diff --git a/src/udi/handlers/ttn/models/hottisThreeWayThermometer/hottisThreeWayThermometer.go b/src/udi/handlers/ttn/models/hottisThreeWayThermometer/hottisThreeWayThermometer.go
index 602c1c3..3dca107 100644
--- a/src/udi/handlers/ttn/models/hottisThreeWayThermometer/hottisThreeWayThermometer.go
+++ b/src/udi/handlers/ttn/models/hottisThreeWayThermometer/hottisThreeWayThermometer.go
@@ -34,7 +34,7 @@ func Parse(fPort int, _ []byte, frmPayload string, variables *map[string]databas
   sensorsMap := make(map[string]string)
   sensorsJSON, ok := (*device).Attributes["Sensors"].(string)
   if !ok {
-    return fmt.Errorf("Unable to load sensor map from attributes")
+    return fmt.Errorf("Unable to load sensor map from attributes: %s", (*device).Attributes)
   }
   errJ := json.Unmarshal([]byte(sensorsJSON), &sensorsMap)
   if errJ != nil {