diff --git a/wp-admin/css/wp-admin.css b/wp-admin/css/wp-admin.css
index f591afa946..7219b50072 100644
--- a/wp-admin/css/wp-admin.css
+++ b/wp-admin/css/wp-admin.css
@@ -750,6 +750,10 @@ input[readonly] {
 	background-color: #eee;
 }
 
+:-moz-placeholder {
+   color: #a9a9a9;
+}
+
 /*------------------------------------------------------------------------------
   1.0 - Text Styles
 ------------------------------------------------------------------------------*/
diff --git a/wp-includes/css/media-views.css b/wp-includes/css/media-views.css
index 8b15f5862f..cca93fa56f 100644
--- a/wp-includes/css/media-views.css
+++ b/wp-includes/css/media-views.css
@@ -65,6 +65,10 @@
 	-webkit-appearance: textfield;
 }
 
+.media-frame :-moz-placeholder {
+   color: #a9a9a9;
+}
+
 /* Enable draggable on IE10 touch events until it's rolled into jQuery UI core */
 .ui-sortable,
 .ui-draggable {