diff --git a/ui/graphview.cpp b/ui/graphview.cpp
index 194139c7d..4a62ed8fd 100644
--- a/ui/graphview.cpp
+++ b/ui/graphview.cpp
@@ -18,7 +18,7 @@
 
 QColor get_curve_color(int index, int length) {
 	QColor c;
-	int hue = (double(index)/double(length))*255;
+	int hue = qRound((double(index)/double(length))*255);
 	c.setHsv(hue, 255, 255);
 	return c;
 }