diff --git a/addons/web/static/src/js/formats.js b/addons/web/static/src/js/formats.js
index 4766fe33433..54f74f29fbf 100644
--- a/addons/web/static/src/js/formats.js
+++ b/addons/web/static/src/js/formats.js
@@ -368,4 +368,9 @@ instance.web.round_decimals = function(value, decimals){
     return instance.web.round_precision(value, Math.pow(10,-decimals));
 };
 
+instance.web.float_is_zero = function(value, decimals){
+    epsilon = Math.pow(10, -decimals);
+    return Math.abs(instance.web.round_precision(value, epsilon)) < epsilon;
+};
+
 })();
diff --git a/addons/web/static/src/js/openerpframework.js b/addons/web/static/src/js/openerpframework.js
index 007edae7220..ed80a3abc87 100644
--- a/addons/web/static/src/js/openerpframework.js
+++ b/addons/web/static/src/js/openerpframework.js
@@ -468,6 +468,9 @@ openerp.PropertiesMixin = _.extend({}, openerp.EventDispatcherMixin, {
             var tmp = self.__getterSetterInternalMap[key];
             if (tmp === val)
                 return;
+            if (self.field && self.field.type === 'float' && tmp && val && openerp.web.float_is_zero(tmp - val, self.field.digits[1])){
+                return;
+            }
             changed = true;
             self.__getterSetterInternalMap[key] = val;
             if (! options.silent)