diff --git a/code/espurna/light.ino b/code/espurna/light.ino
index e95f6a79..d867b7ba 100644
--- a/code/espurna/light.ino
+++ b/code/espurna/light.ino
@@ -508,7 +508,7 @@ unsigned int lightBrightness() {
     return _brightness;
 }
 
-void lightBrightness(unsigned int b) {
+void lightBrightness(int b) {
     _brightness = constrain(b, 0, LIGHT_MAX_BRIGHTNESS);
 }
 
diff --git a/code/espurna/light_ir.ino b/code/espurna/light_ir.ino
index bac6e7f1..c2f48fe7 100644
--- a/code/espurna/light_ir.ino
+++ b/code/espurna/light_ir.ino
@@ -834,7 +834,7 @@ unsigned int lightBrightness() {
 
 // ---------------------------------------------------------------------------------------
 // Set Brightness
-void lightBrightness(unsigned int b) {
+void lightBrightness(int b) {
 	b=constrain(b, 0, 255);
 	DEBUG_MSG_P(PSTR("[WEB|API] Set Brightness to : %d\n"), b);
 	_cur_color.v=b;