1 files changed, 6 insertions, 1 deletions

diff --git a/collector/powersupplyclass.go b/collector/powersupplyclass.go
index 988b0ee..309b08c 100644
--- a/collector/powersupplyclass.go
+++ b/collector/powersupplyclass.go
@@ -17,7 +17,9 @@
 package collector
 
 import (
+        "errors"
         "fmt"
+        "os"
         "regexp"
 
         "github.com/go-kit/kit/log"
@@ -54,6 +56,9 @@ func NewPowerSupplyClassCollector(logger log.Logger) (Collector, error) {
 func (c *powerSupplyClassCollector) Update(ch chan<- prometheus.Metric) error {
         powerSupplyClass, err := getPowerSupplyClassInfo(c.ignoredPattern)
         if err != nil {
+                if errors.Is(err, os.ErrNotExist) {
+                        return ErrNoData
+                }
                 return fmt.Errorf("could not get power_supply class info: %s", err)
         }
         for _, powerSupply := range powerSupplyClass {
@@ -184,7 +189,7 @@ func getPowerSupplyClassInfo(ignore *regexp.Regexp) (sysfs.PowerSupplyClass, err
         powerSupplyClass, err := fs.PowerSupplyClass()
 
         if err != nil {
-                return powerSupplyClass, fmt.Errorf("error obtaining power_supply class info: %s", err)
+                return powerSupplyClass, fmt.Errorf("error obtaining power_supply class info: %w", err)
         }
 
         for device := range powerSupplyClass {