diff --git a/src/common/tvgLines.cpp b/src/common/tvgLines.cpp
index 217b4917..98b8423c 100644
--- a/src/common/tvgLines.cpp
+++ b/src/common/tvgLines.cpp
@@ -238,7 +238,7 @@ float bezAngleAt(const Bezier& bz, float t)
     pt.x *= 3;
     pt.y *= 3;
 
-    return mathRad2Deg(atan2(pt.x, pt.y));
+    return mathRad2Deg(atan2(pt.y, pt.x));
 }