diff --git a/core/themes/seven/js/mobile.install.js b/core/themes/seven/js/mobile.install.js
index 43196cb..fbc26e0 100644
--- a/core/themes/seven/js/mobile.install.js
+++ b/core/themes/seven/js/mobile.install.js
@@ -23,6 +23,17 @@
       stepIndicator.className = 'step-indicator';
       stepIndicator.innerHTML = findActiveStep(steps) + '/' + steps.length;
       header.appendChild(stepIndicator);
+
+      var site_default_country = document.querySelector('select[name="site_default_country"]');
+      if (site_default_country) {
+        var language = navigator.languages !== 'undefined' ? navigator.languages[0] : navigator.language;
+        var country = language.indexOf('-') !== -1 ? language.split('-')[1] : language;
+
+        var country_option = site_default_country.querySelector('[value="' + country + '"]');
+        if (country_option) {
+          country_option.selected = true;
+        }
+      }
     }
   }