diff --git a/src/wp-content/themes/twentyfifteen/functions.php b/src/wp-content/themes/twentyfifteen/functions.php
index 776f06a252..c1c5281743 100644
--- a/src/wp-content/themes/twentyfifteen/functions.php
+++ b/src/wp-content/themes/twentyfifteen/functions.php
@@ -310,6 +310,20 @@ function twentyfifteen_nav_description( $item_output, $item, $depth, $args ) {
 }
 add_filter( 'walker_nav_menu_start_el', 'twentyfifteen_nav_description', 10, 4 );
 
+/**
+ * Add a `screen-reader-text` class to the search form's submit button
+ *
+ * @since Twenty Fifteen 1.0
+ *
+ * @param string $html Search form HTML
+ *
+ * @return string Modified search form HTML
+ */
+function twentyfifteen_search_form_modify( $html ) {
+	return str_replace( 'class="search-submit"', 'class="search-submit screen-reader-text"', $html );
+}
+add_filter( 'get_search_form', 'twentyfifteen_search_form_modify' );
+
 /**
  * Implement the Custom Header feature.
  *
diff --git a/src/wp-content/themes/twentyfifteen/style.css b/src/wp-content/themes/twentyfifteen/style.css
index d380f5f55e..c81c6e8bc6 100644
--- a/src/wp-content/themes/twentyfifteen/style.css
+++ b/src/wp-content/themes/twentyfifteen/style.css
@@ -596,10 +596,6 @@ textarea {
 	bottom: 0;
 }
 
-.search-form input[type="submit"] {
-	display: none;
-}
-
 
 /**
  * 6.0 Navigations