diff --git a/pkg/temperature/ds18b20.go b/pkg/temperature/ds18b20.go
index a86740c..6c77a27 100644
--- a/pkg/temperature/ds18b20.go
+++ b/pkg/temperature/ds18b20.go
@@ -248,6 +248,10 @@ func read(sensor string) (int64, error) {
 
 	raw := string(data)
 
+	if raw == "" {
+		return NaN, fmt.Errorf("%v: %w: empty file", sensor, ErrReadSensor)
+	}
+
 	if !strings.Contains(raw, " YES") {
 		return NaN, fmt.Errorf("%v: %w: checksum failed [%v]", sensor, ErrReadSensor, raw)
 	}