diff --git a/src/selectize.js b/src/selectize.js
index 41627e160..ba6b1a740 100644
--- a/src/selectize.js
+++ b/src/selectize.js
@@ -1752,6 +1752,7 @@ $.extend(Selectize.prototype, {
 		self.$input
 			.html('')
 			.append(revertSettings.$children)
+			.removeAttr('tabindex')
 			.attr({tabindex: revertSettings.tabindex})
 			.show();
 
diff --git a/test/api.js b/test/api.js
index 3166f2170..2ac35dce9 100644
--- a/test/api.js
+++ b/test/api.js
@@ -549,6 +549,11 @@
 				expect(test.$select.html()).to.be.equal(children);
 				expect(test.$select.attr('tabindex')).to.be.equal('9999');
 			});
+			it('should remove tabindex if it was originally undefined', function() {
+				var test = setup_test('<select>', {});
+				test.selectize.destroy();
+				expect(test.$select.attr('tabindex')).to.be.equal(undefined);
+			});
 		});
 
 	});