diff --git a/horizon/static/horizon/js/horizon.forms.js b/horizon/static/horizon/js/horizon.forms.js
index 00e41478eb..27a7e9bd66 100644
--- a/horizon/static/horizon/js/horizon.forms.js
+++ b/horizon/static/horizon/js/horizon.forms.js
@@ -74,7 +74,7 @@ horizon.forms = {
       if ($option.val() == "subnetpool") {
         $ipVersion.attr("disabled", "disabled");
       } else {
-        $ipVersion.removeAttr("disabled");
+        $ipVersion.prop("disabled", false);
       }
     });
   },
@@ -198,7 +198,7 @@ horizon.forms.handle_submit = function (el) {
     // Remove disabled attribute on select fields before submit to get value
     // included in POST request.
     $this.find('select[disabled="disabled"]').each(function (i, field) {
-      $(field).removeAttr("disabled");
+      $(field).prop("disabled", false);
     });
     return true;
   });
@@ -379,7 +379,7 @@ horizon.forms.checkSpinnerValue = function($inputs) {
     var $up = $parent.find('.spinner-up');
     var $down = $parent.find('.spinner-down');
 
-    $parent.find('.themable-spinner-btn').removeAttr('disabled');
+    $parent.find('.themable-spinner-btn').prop('disabled', false);
     if (val <= min) {
 
       // Disable if we've hit the min
@@ -516,7 +516,7 @@ horizon.addInitFunction(horizon.forms.init = function () {
           //The required verification should be removed and recorded
           if ($input.attr('required') === 'required') {
             $input.data('savedRequired', 'required');
-            $input.removeAttr('required');
+            $input.prop('required', false);
           }
         } else {
           //If the input is a checkbox no need to replace html for label since it has another structure
diff --git a/horizon/static/horizon/js/horizon.lists.js b/horizon/static/horizon/js/horizon.lists.js
index 123dfdc307..3782be3272 100644
--- a/horizon/static/horizon/js/horizon.lists.js
+++ b/horizon/static/horizon/js/horizon.lists.js
@@ -25,7 +25,7 @@ horizon.lists = {
       var active_features = $("#selected_"+type+" > li").map(function () {
         return $(this).attr("name");
       });
-      $("#"+type+"ListId input:checkbox").removeAttr('checked');
+      $("#"+type+"ListId input:checkbox").prop('checked', false);
       active_features.each(function (index, value) {
         $("#"+type+"ListId input:checkbox[value=" + value + "]")
           .prop('checked', true)
diff --git a/horizon/static/horizon/js/horizon.membership.js b/horizon/static/horizon/js/horizon.membership.js
index 678e109f65..39b6e042c5 100644
--- a/horizon/static/horizon/js/horizon.membership.js
+++ b/horizon/static/horizon/js/horizon.membership.js
@@ -318,7 +318,7 @@ horizon.membership = {
       }
       else {
         $('#no_' + filter).hide();
-        $("input[id='" + filter + "']").removeAttr('disabled');
+        $("input[id='" + filter + "']").prop('disabled', false);
       }
     });
   },
@@ -446,7 +446,7 @@ horizon.membership = {
         },
         'testQuery': function (query, txt, span) {
           if ($(input).attr('id') === filter) {
-            $(input).prev().removeAttr('disabled');
+            $(input).prev().prop('disabled', false);
             return query.test($(span).text());
           } else {
             return true;
diff --git a/horizon/static/horizon/js/horizon.modals.js b/horizon/static/horizon/js/horizon.modals.js
index a7d5cb4b48..87e546ca25 100644
--- a/horizon/static/horizon/js/horizon.modals.js
+++ b/horizon/static/horizon/js/horizon.modals.js
@@ -121,7 +121,7 @@ horizon.modals.init_wizard = function () {
     });
 
     // Temporarilly remove "disabled" attribute to get the values serialized
-    var disabled = $form.find('select[disabled="disabled"]').removeAttr("disabled");
+    var disabled = $form.find('select[disabled="disabled"]').prop("disabled", false);
 
     // Send the data for validation.
     $.ajax({
@@ -321,7 +321,7 @@ horizon.addInitFunction(horizon.modals.init = function() {
         add_to_field_header = jqXHR.getResponseHeader("X-Horizon-Add-To-Field"),
         json_data, field_to_update;
       if (redirect_header === null) {
-        $('.ajax-modal, .dropdown-toggle').removeAttr("disabled");
+        $('.ajax-modal, .dropdown-toggle').prop("disabled", false);
       }
 
       content_disposition = jqXHR.getResponseHeader("content-disposition");
@@ -361,7 +361,7 @@ horizon.addInitFunction(horizon.modals.init = function() {
       if (jqXHR.getResponseHeader('logout')) {
         location.href = jqXHR.getResponseHeader("X-Horizon-Location");
       } else {
-        $('.ajax-modal, .dropdown-toggle').removeAttr("disabled");
+        $('.ajax-modal, .dropdown-toggle').prop("disabled", false);
         $formElement.closest(".modal").modal("hide");
         horizon.toast.add("danger", gettext("There was an error submitting the form. Please try again."));
       }
diff --git a/horizon/static/horizon/js/horizon.tables.js b/horizon/static/horizon/js/horizon.tables.js
index 8783716429..7b8d996320 100644
--- a/horizon/static/horizon/js/horizon.tables.js
+++ b/horizon/static/horizon/js/horizon.tables.js
@@ -609,7 +609,7 @@ horizon.datatables.update_header_checkbox = function(table) {
     $multi_select_checkbox.prop('checked', false);
     $multi_select_checkbox.attr('disabled', true);
   } else {
-    $multi_select_checkbox.removeAttr('disabled');
+    $multi_select_checkbox.prop('disabled', false);
     var not_checked = $checkboxes.not(':checked').length;
     $multi_select_checkbox.prop('checked', not_checked == 0);
   }