diff --git a/Controllers/NollieController/RGBController_Nollie.cpp b/Controllers/NollieController/RGBController_Nollie.cpp
index 689ca6eb..d798c345 100644
--- a/Controllers/NollieController/RGBController_Nollie.cpp
+++ b/Controllers/NollieController/RGBController_Nollie.cpp
@@ -211,7 +211,7 @@ void RGBController_Nollie::DeviceUpdateLEDs()
         {
             if(zones[zone_idx].leds_count > 0)
             {
-                controller->SetChannelLEDs(zone_idx, zones[zone_idx].colors, zones[zone_idx].leds_count);
+                controller->SetChannelLEDs((unsigned char)zone_idx, zones[zone_idx].colors, zones[zone_idx].leds_count);
             }
         }
         controller->SendUpdate();