diff --git a/light/Light.cpp b/light/Light.cpp
index 44507f4..f16c82a 100644
--- a/light/Light.cpp
+++ b/light/Light.cpp
@@ -74,6 +74,10 @@ static uint32_t getBrightness(const LightState& state) {
 }
 
 static inline uint32_t scaleBrightness(uint32_t brightness, uint32_t maxBrightness) {
+    if (brightness == 0) {
+        return 0;
+    }
+
     return (brightness - 1) * (maxBrightness - 1) / (0xFF - 1) + 1;
 }