diff --git a/src/wp-admin/css/forms.css b/src/wp-admin/css/forms.css
index 665e6c0af8..a059fffb36 100644
--- a/src/wp-admin/css/forms.css
+++ b/src/wp-admin/css/forms.css
@@ -1365,9 +1365,10 @@ table.form-table td .updated p {
 	}
 }
 
-@media only screen and (max-height: 480px) {
-	/*  Request Credentials */
-	.request-filesystem-credentials-dialog .notification-dialog{
+@media only screen and (max-height: 480px), screen and (max-width: 450px) {
+	/*  Request Credentials / File Editor Warning */
+	.request-filesystem-credentials-dialog .notification-dialog,
+	.file-editor-warning .notification-dialog {
 		width: 100%;
 		height: 100%;
 		max-height: 100%;