--- a/dom/animation/test/mozilla/test_moz-prefixed-properties.html
+++ b/dom/animation/test/mozilla/test_moz-prefixed-properties.html
@@ -39,16 +39,19 @@ const testcases = [
   },
   {
     property: "-moz-box-pack"
   },
   {
     property: "-moz-float-edge"
   },
   {
+    property: "-moz-force-broken-image-icon"
+  },
+  {
     property: "-moz-orient"
   },
   {
     property: "-moz-osx-font-smoothing",
     pref: "layout.css.osx-font-smoothing.enabled"
   },
   {
     property: "-moz-stack-sizing"
@@ -61,20 +64,20 @@ const testcases = [
   },
   {
     property: "-moz-user-input"
   },
   {
     property: "-moz-user-modify"
   },
   {
-    property: "-moz-window-dragging"
+    property: "-moz-user-select"
   },
   {
-    property: "-moz-force-broken-image-icon"
+    property: "-moz-window-dragging"
   },
 ];
 
 testcases.forEach(testcase => {
   if (testcase.pref && !IsCSSPropertyPrefEnabled(testcase.pref)) {
     return;
   }