diff --git a/nv.d3.js b/nv.d3.js
index 703e663..12cf053 100644
--- a/nv.d3.js
+++ b/nv.d3.js
@@ -3679,6 +3679,8 @@ nv.models.lineWithFocusChart = function() {
   chart.legend = legend;
   chart.xAxis = xAxis;
   chart.yAxis = yAxis;
+  chart.x2Axis = x2Axis;
+  chart.y2Axis = y2Axis;
 
   d3.rebind(chart, lines, 'x', 'y', 'size', 'xDomain', 'yDomain', 'forceX', 'forceY', 'interactive', 'clipEdge', 'clipVoronoi', 'id');
 
@@ -6779,4 +6781,4 @@ nv.models.stackedAreaChart = function() {
 
   return chart;
 }
-})();
\ No newline at end of file
+})();