diff --git a/pui/pui.cpp b/pui/pui.cpp
index 8da3331..7c9859e 100644
--- a/pui/pui.cpp
+++ b/pui/pui.cpp
@@ -133,7 +133,7 @@ void PUi::OnScroll(float dx, float dy)
 	if (this->active) {
 		dy *= .1f;
 		if (this->mm & 1) dy *= .1f;
-		if (this->mm & 2) dy *= .01f;
+		if (this->mm & 2) dy *= .001f;
 		float value = this->active->value + dy;
 		if (this->active->SetValue(value)) {
 			this->ParameterChanged(this->active);