diff --git a/examples/lineChartSVGResize.html b/examples/lineChartSVGResize.html
index 84dbd86..51d8175 100644
--- a/examples/lineChartSVGResize.html
+++ b/examples/lineChartSVGResize.html
@@ -23,7 +23,7 @@ svg {
     <a href="#" id="zoomIn">Zoom In</a> <a href="#" id="zoomOut">Zoom Out</a>
   </div>
 
-  <div id="chart1">
+  <div id="chart1" class='with-transitions'>
     <svg></svg>
   </div>
 
diff --git a/src/tooltip.js b/src/tooltip.js
index a2bd66d..77dab40 100644
--- a/src/tooltip.js
+++ b/src/tooltip.js
@@ -90,6 +90,9 @@ window.nv.tooltip.* also has various helper methods.
         function convertViewBoxRatio() {
             if (chartContainer) {
               var svg = d3.select(chartContainer);
+              if (svg.node().tagName !== "svg") {
+                 svg = svg.select("svg");
+              }
               var viewBox = (svg.node()) ? svg.attr('viewBox') : null;
               if (viewBox) {
                 viewBox = viewBox.split(' ');