diff --git a/charger/shelly.go b/charger/shelly.go
index 85a7f9e54..b93c31bb0 100644
--- a/charger/shelly.go
+++ b/charger/shelly.go
@@ -91,7 +91,7 @@ func NewShelly(uri, user, password string, channel int, standbypower float64) (*
 
 		if resp.NumMeters == 0 {
 			// Shelly1 force static mode with fake power http://192.168.178.xxx/settings/power/0?power=standbypower+1
-			uri := fmt.Sprintf("%s/settings/power/%d?power=%d", c.uri, c.channel, int(math.Abs(c.standbypower)+1))
+			uri := fmt.Sprintf("%s/settings/power/%d?power=%d", c.uri, c.channel, int(math.Abs(c.standbypower)))
 			if err := c.GetJSON(uri, &resp); err != nil {
 				return c, err
 			}