diff --git a/include/components.hpp b/include/components.hpp
index 306e0b9f..1ccfa1af 100644
--- a/include/components.hpp
+++ b/include/components.hpp
@@ -337,7 +337,6 @@ struct Rogan1PWhite : Rogan1P {
 
 struct SynthTechAlco : SVGKnob {
 	SynthTechAlco() {
-		box.size = Vec(45, 45);
 		minAngle = -0.82*M_PI;
 		maxAngle = 0.82*M_PI;
 		setSVG(SVG::load(assetGlobal("res/ComponentLibrary/SynthTechAlco.svg")));
diff --git a/include/engine.hpp b/include/engine.hpp
index cfff9b1d..b4220e6a 100644
--- a/include/engine.hpp
+++ b/include/engine.hpp
@@ -32,6 +32,9 @@ struct Output {
 struct Light {
 	/** The square of the brightness value */
 	float value = 0.0;
+	void setBrightness(float brightness) {
+		value = brightness * brightness;
+	}
 	void setBrightnessSmooth(float brightness);
 };
 
diff --git a/include/rack.hpp b/include/rack.hpp
index 93ebaf53..7a079bfe 100644
--- a/include/rack.hpp
+++ b/include/rack.hpp
@@ -2,12 +2,12 @@
 
 #include "util.hpp"
 #include "math.hpp"
+#include "asset.hpp"
 #include "plugin.hpp"
 #include "engine.hpp"
 #include "gui.hpp"
 #include "app.hpp"
 #include "components.hpp"
-#include "asset.hpp"
 
 
 namespace rack {
@@ -80,5 +80,14 @@ ValueLight *createValueLight(Vec pos, float *value) {
 	return light;
 }
 
+/** Polyfill for future LightWidget */
+template <class TLight>
+ValueLight *createValueLight(Vec pos, Module *module, int lightId) {
+	ValueLight *light = new TLight();
+	light->box.pos = pos;
+	light->value = &module->lights[lightId].value;
+	return light;
+}
+
 
 } // namespace rack
diff --git a/src/engine.cpp b/src/engine.cpp
index ef0163dd..5e2b9f05 100644
--- a/src/engine.cpp
+++ b/src/engine.cpp
@@ -34,7 +34,7 @@ static float smoothValue;
 
 
 void Light::setBrightnessSmooth(float brightness) {
-	value += (powf(brightness, 2) - value) / sampleRate * 60.0;
+	value += (brightness * brightness - value) / sampleRate * 60.0;
 }