Index: src/include/xy.h
===================================================================
--- src/include/xy.h	(revision 491)
+++ src/include/xy.h	(revision 514)
@@ -42,5 +42,5 @@
 
       ///Constructing the instance from coordinates
-      xy(T a, T b) : x(a), y(a) { }
+      xy(T a, T b) : x(a), y(b) { }