--- src/GraphicFunctions.cxx
+++ src/GraphicFunctions.cxx
@@ -59,6 +59,10 @@
                           double rx, double ry, double phi, bool largeArc, bool sweep, double x, double y,
                           double &xmin, double &ymin, double &xmax, double &ymax)
 {
+	if (x0 == x && y0 == y) {
+		return;
+	}
+
 	phi *= M_PI/180;
 	if (rx < 0.0)
 		rx *= -1.0;