diff --git a/include/app/Knob.hpp b/include/app/Knob.hpp
index 2dc10a15..031d2730 100644
--- a/include/app/Knob.hpp
+++ b/include/app/Knob.hpp
@@ -16,6 +16,8 @@ struct Knob : ParamWidget {
 	/** Enable snapping at integer values */
 	bool snap = false;
 	float snapValue = NAN;
+	/** Drag horizontally instead of vertically */
+	bool horizontal = false;
 
 	void onHover(const event::Hover &e) override;
 	void onButton(const event::Button &e) override;
diff --git a/include/app/SliderKnob.hpp b/include/app/SliderKnob.hpp
index fdffd946..c5ec60e3 100644
--- a/include/app/SliderKnob.hpp
+++ b/include/app/SliderKnob.hpp
@@ -7,6 +7,7 @@ namespace rack {
 
 
 struct SliderKnob : Knob {
+	// Bypass Knob's circular hitbox detection
 	void onHover(const event::Hover &e) override {
 		ParamWidget::onHover(e);
 	}
diff --git a/src/app/Knob.cpp b/src/app/Knob.cpp
index 3b9c1b43..1eb0a036 100644
--- a/src/app/Knob.cpp
+++ b/src/app/Knob.cpp
@@ -64,7 +64,10 @@ void Knob::onDragMove(const event::DragMove &e) {
 			// Continuous encoders scale as if their limits are +/-1
 			range = 2.f;
 		}
-		float delta = KNOB_SENSITIVITY * -e.mouseDelta.y * speed * range;
+		float delta = (horizontal ? e.mouseDelta.x : -e.mouseDelta.y);
+		delta *= KNOB_SENSITIVITY;
+		delta *= speed;
+		delta *= range;
 
 		// Drag slower if mod is held
 		int mods = app()->window->getMods();