diff --git a/IPython/html/static/widgets/js/widget_float.js b/IPython/html/static/widgets/js/widget_float.js
index b5d808f..128c135 100644
--- a/IPython/html/static/widgets/js/widget_float.js
+++ b/IPython/html/static/widgets/js/widget_float.js
@@ -9,6 +9,10 @@ define([
var IntTextView = int_widgets.IntTextView;
var FloatSliderView = IntSliderView.extend({
+ _validate_text_input: function(x) {
+ return parseFloat(x);
+ },
+
_validate_slide_value: function(x) {
// Validate the value of the slider before sending it to the back-end
// and applying it to the other views on the page.