diff --git a/lib/hacks/placeholder-shown.js b/lib/hacks/placeholder-shown.js
index c29525ee2..8bb1cc8e7 100644
--- a/lib/hacks/placeholder-shown.js
+++ b/lib/hacks/placeholder-shown.js
@@ -5,9 +5,7 @@ class PlaceholderShown extends Selector {
    * Return different selectors depend on prefix
    */
   prefixed(prefix) {
-    if (prefix === '-moz-') {
-      return ':-moz-placeholder'
-    } else if (prefix === '-ms-') {
+    if (prefix === '-ms-') {
       return ':-ms-input-placeholder'
     }
     return `:${prefix}placeholder-shown`