diff --git a/examples/charts/experimental.htm b/examples/charts/experimental.htm
index 7fb54b5d16..18d554c033 100644
--- a/examples/charts/experimental.htm
+++ b/examples/charts/experimental.htm
@@ -437,7 +437,6 @@
     height: 180,
     right: 10,
     bins: 50,
-    bar_margin: 0,
     target: '#histogram1',
     y_extended_ticks: true,
     mouseover: function(d, i) {
@@ -460,7 +459,6 @@
         width: 600,
         height: 300,
         right: 40,
-        bar_margin: 0,
         bins: 150,
         target: '#ufos',
         y_extended_ticks: true,
@@ -745,7 +743,6 @@
     width: 295,
     height: 180,
     bins: 50,
-    bar_margin: 0,
     target: '#histogram1',
     y_extended_ticks: true,
     mouseover: function(d, i) {
@@ -768,7 +765,6 @@
         width: 600,
         height: 300,
         right: 40,
-        bar_margin: 0,
         bins: 150,
         target: '#ufos',
         y_extended_ticks: true,