diff --git a/IPython/html/static/widgets/js/widget_bool.js b/IPython/html/static/widgets/js/widget_bool.js
index 27e4928..dc107ec 100644
--- a/IPython/html/static/widgets/js/widget_bool.js
+++ b/IPython/html/static/widgets/js/widget_bool.js
@@ -59,10 +59,9 @@ define([
             this.$checkbox.prop('checked', this.model.get('value'));
 
             if (options === undefined || options.updated_view != this) {
-                var disabled = this.model.get('disabled');
-                this.$checkbox.prop('disabled', disabled);
+                this.$checkbox.prop("disabled", this.model.get("disabled"));
 
-                var description = this.model.get('description');
+                var description = this.model.get("description");
                 if (description.trim().length === 0) {
                     this.$label.hide();
                 } else {
@@ -113,7 +112,7 @@ define([
             /**
              * Update the contents of this view
              *
-             * Called when the model is changed.  The model may have been 
+             * Called when the model is changed. The model may have been 
              * changed by another view or by a state update from the back-end.
              */
             if (this.model.get('value')) {
@@ -123,17 +122,16 @@ define([
             }
 
             if (options === undefined || options.updated_view != this) {
-
-                var disabled = this.model.get('disabled');
-                this.$el.prop('disabled', disabled);
-
-                var description = this.model.get('description');
+                this.$el.prop("disabled", this.model.get("disabled"));
                 this.$el.attr("title", this.model.get("tooltip"));
-                this.$el.text(description);
+
+                var description = this.model.get("description");
                 var icon = this.model.get("icon");
-                $('<i class="fa"></i>').prependTo(this.$el).addClass(icon);
                 if (description.trim().length === 0 && icon.trim().length ===0) {
                     this.$el.html("&nbsp;"); // Preserve button height
+                } else {
+                    this.$el.text(description);
+                    $('<i class="fa"></i>').prependTo(this.$el).addClass(icon);
                 }
             }
             return ToggleButtonView.__super__.update.apply(this);
diff --git a/IPython/html/static/widgets/js/widget_button.js b/IPython/html/static/widgets/js/widget_button.js
index cc55f47..a2e6bd4 100644
--- a/IPython/html/static/widgets/js/widget_button.js
+++ b/IPython/html/static/widgets/js/widget_button.js
@@ -27,21 +27,19 @@ define([
             /**
              * Update the contents of this view
              *
-             * Called when the model is changed.  The model may have been 
+             * Called when the model is changed. The model may have been 
              * changed by another view or by a state update from the back-end.
              */
-            var description = this.model.get('description');
+            this.$el.prop("disabled", this.model.get("disabled"));
             this.$el.attr("title", this.model.get("tooltip"));
-            this.$el.text(description);
+
+            var description = this.model.get("description");
             var icon = this.model.get("icon");
-            $('<i class="fa"></i>').prependTo(this.$el).addClass(icon);
             if (description.trim().length === 0 && icon.trim().length ===0) {
                 this.$el.html("&nbsp;"); // Preserve button height
-            }
-            if (this.model.get('disabled')) {
-                this.$el.attr('disabled','disabled');
             } else {
-                this.$el.removeAttr('disabled');
+                this.$el.text(description);
+                $('<i class="fa"></i>').prependTo(this.$el).addClass(icon);
             }
 
             return ButtonView.__super__.update.apply(this);