diff --git a/core/includes/install.core.inc b/core/includes/install.core.inc
index 644ec57..fba5d09 100644
--- a/core/includes/install.core.inc
+++ b/core/includes/install.core.inc
@@ -1605,6 +1605,13 @@ function install_select_language_form($form, &$form_state, $files = array()) {
   }
 
   $browser_langcode = language_from_browser($browser_options);
+
+  $form['langcode_search'] = array(
+    '#type' => 'textfield',
+    '#default_value' => $select_options[$browser_langcode],
+    '#placeholder' => t('Search Language'),
+  );
+
   $form['langcode'] = array(
     '#type' => 'select',
     '#title' => t('Choose language'),
@@ -1612,6 +1619,7 @@ function install_select_language_form($form, &$form_state, $files = array()) {
     '#options' => $select_options,
     // Use the browser detected language as default or English if nothing found.
     '#default_value' => !empty($browser_langcode) ? $browser_langcode : 'en',
+    '#attributes' => array('size' => 8),
   );
 
   if (empty($files)) {
diff --git a/core/themes/seven/images/search-button.png b/core/themes/seven/images/search-button.png
new file mode 100644
index 0000000..c6e820a
--- /dev/null
+++ b/core/themes/seven/images/search-button.png
@@ -0,0 +1,4 @@
+‰PNG
+
+   IHDR   "   0    Q2÷Ž  œIDAT8O}ÏKAÇçoK´*“ÆÆˆ©)„
+ÒZ-ô$%^ÚÒBÅƒ`õPÚ[…=	"Øt—]v6,’fÎ¥×Î›7›ÕÐïÛý¾™ïû¼…%W¨ÁU¦AÞ‰è* òÂHžðºJ¸dÇ&‚ŒÓ’K‚¯$ŒžDKX¢ˆ1@DÃÚ{kkûm1Á-ÆEbpÃ-ÍU*sKG,'sÉs{±¾w~¾W_ló(ÆÅ‘Ú™Ýg77áþìN¬JAÂÕ²és™åÕ0‡D ,X)Qßó|ZZ	¢,Žˆì€|,pÄ;(}"E$ÃÞ(ŒNfŸ¶z½V£ôÃÇá»þú°:?_-?x=€HR	‚€§vü¾Ñx÷ýyíÍ5ÜC1oòÌïÿ	X÷ÅBóF¬Â þŸ*íÝõ'¿³ˆ`Ž˜ŸRÝŸñFü;ònÝSÄ=ˆ§ÈuÎ_çDú}¯/”8;¼>QÃÎ<¼õ‰û]òr]ÒE¹ÝLnÞâª€È]$„ÜáÕu¸dÇ&‚ŒÓ’K‚¯8”îXu¨£ˆR@DC[ÍååÍ–˜àå"68µá±wg&ÇÆ&gviNÄæ’çÖt¥yxØ¬L·xdãbŠHmŒoÒ^ÏÜß°U)ˆ¹P<Ñ¹NŠf±@6˜Q+œêš¦Ÿj†•Å‘WÅ-Žh[…uÃRDLÓ´àµLëËxmûâb»ZØÑ1…9DÀ.ßÞ›˜šš(.ìX’âˆaÜ8eÐÏkÕêËO&W/ánŠAx“dzç—AÏßÖ«0 „ÿ§JûY½rœEsÄô”:ûæãŒèw¤Ýº§ˆ6z,M‘>êœ!º:Ï‰t:Z^(qvhTál4Y‰#    IEND®B`‚
\ No newline at end of file
diff --git a/core/themes/seven/install-page.css b/core/themes/seven/install-page.css
index 0d223f0..7338787 100644
--- a/core/themes/seven/install-page.css
+++ b/core/themes/seven/install-page.css
@@ -186,3 +186,17 @@ body.install-page #page-title {
     width: auto;
   }
 }
+.install-select-language-form input.form-text {
+  background-image: url('images/search-button.png');
+  background-repeat: no-repeat;
+  background-position: right 0px;
+  border-radius: 3px;
+  padding: 5px;
+  width: 100%;
+}
+.install-select-language-form select.form-select {
+  border-radius: 3px;
+  padding: 5px;
+  width: 100%;
+  line-height: 160px;
+}
diff --git a/core/themes/seven/js/install.js b/core/themes/seven/js/install.js
new file mode 100644
index 0000000..d90745f
--- /dev/null
+++ b/core/themes/seven/js/install.js
@@ -0,0 +1,24 @@
+(function ($, Drupal) {
+
+  "use strict";
+
+  // Find the select option that matches the search string the closest and
+  // select it.
+  Drupal.behaviors.LangcodeSearch = {
+    attach: function (context) {
+      var $form = $('#install-select-language-form');
+      var $search = $form.find('input.form-text[name="langcode_search"]'), $select = $form.find('select[name="langcode"]');
+
+      $search.on('keyup', function(){
+        var $this = $(this), r = new RegExp($this.val(), 'i');
+
+        var $searched = $select.find('option').filter(function(){
+          return $(this).text().match(r);
+        });
+
+        $select.val($searched.val());
+      });
+    }
+  };
+
+})(jQuery, Drupal);
diff --git a/core/themes/seven/seven.theme b/core/themes/seven/seven.theme
index 819db34..1668486 100644
--- a/core/themes/seven/seven.theme
+++ b/core/themes/seven/seven.theme
@@ -16,6 +16,9 @@ function seven_library_info() {
   $libraries['install-page'] = array(
     'version' => \Drupal::VERSION,
     'js' => array(
+      $path . '/js/install.js' => array(
+        'group' => JS_THEME,
+      ),
       $path . '/js/mobile.install.js' => array(
         'group' => JS_THEME,
       ),
@@ -25,6 +28,10 @@ function seven_library_info() {
         'group' => CSS_AGGREGATE_THEME,
       ),
     ),
+    'dependencies' => array(
+      array('system', 'jquery'),
+      array('system', 'drupal'),
+    ),
   );
 
   return $libraries;