diff --git a/tasmota/support_device_groups.ino b/tasmota/support_device_groups.ino
index 1bc6ba956..44e0c5106 100644
--- a/tasmota/support_device_groups.ino
+++ b/tasmota/support_device_groups.ino
@@ -480,7 +480,7 @@ cleanup:
   }
 }
 
-bool _SendDeviceGroupMessage(uint32_t device, DevGroupMessageType message_type, ...)
+bool _SendDeviceGroupMessage(int32_t device, DevGroupMessageType message_type, ...)
 {
   // If device groups is not up, ignore this request.
   if (!device_groups_up) return 1;
diff --git a/tasmota/xdrv_35_pwm_dimmer.ino b/tasmota/xdrv_35_pwm_dimmer.ino
index 892f05da9..d86082f19 100644
--- a/tasmota/xdrv_35_pwm_dimmer.ino
+++ b/tasmota/xdrv_35_pwm_dimmer.ino
@@ -491,7 +491,7 @@ void PWMDimmerHandleButton(uint32_t button_index, bool pressed)
   }
 
   // If we need to adjust the brightness, do it.
-  uint32_t negated_device_group_index = -power_button_index;
+  int32_t negated_device_group_index = -power_button_index;
   if (bri_offset) {
     int32_t bri;
 #ifdef USE_PWM_DIMMER_REMOTE
@@ -510,7 +510,7 @@ void PWMDimmerHandleButton(uint32_t button_index, bool pressed)
     }
     if (new_bri != bri) {
 #ifdef USE_DEVICE_GROUPS
-      SendDeviceGroupMessage(negated_device_group_index, (dgr_more_to_come ? DGR_MSGTYP_UPDATE_MORE_TO_COME : DGR_MSGTYP_UPDATE_DIRECT), DGR_ITEM_LIGHT_BRI, new_bri);
+      SendDeviceGroupMessage(negated_device_group_index, (dgr_more_to_come ? DGR_MSGTYP_UPDATE_MORE_TO_COME : DGR_MSGTYP_UPDATE_DIRECT), DGR_ITEM_LIGHT_BRI, new_bri, DGR_ITEM_BRI_POWER_ON, new_bri);
 #endif  // USE_DEVICE_GROUPS
 #ifdef USE_PWM_DIMMER_REMOTE
       if (active_remote_pwm_dimmer) {