diff --git a/core/includes/install.core.inc b/core/includes/install.core.inc
index ee5c0a4..31092fb 100644
--- a/core/includes/install.core.inc
+++ b/core/includes/install.core.inc
@@ -1099,6 +1099,7 @@ function install_settings_form($form, &$form_state, &$install_state) {
   $form['actions']['save'] = array(
     '#type' => 'submit',
     '#value' => t('Save and continue'),
+    '#button_type' => 'primary',
     '#limit_validation_errors' => array(
       array('driver'),
       array(isset($form_state['input']['driver']) ? $form_state['input']['driver'] : current($drivers_keys)),
@@ -1391,6 +1392,7 @@ function install_select_profile_form($form, &$form_state, $install_state) {
   $form['actions']['submit'] =  array(
     '#type' => 'submit',
     '#value' => t('Save and continue'),
+    '#button_type' => 'primary',
   );
   return $form;
 }
@@ -1587,6 +1589,7 @@ function install_select_language_form($form, &$form_state, $files = array()) {
   $form['actions']['submit'] =  array(
     '#type' => 'submit',
     '#value' => t('Save and continue'),
+    '#button_type' => 'primary',
   );
   return $form;
 }
@@ -2478,6 +2481,7 @@ function _install_configure_form($form, &$form_state, &$install_state) {
     '#type' => 'submit',
     '#value' => t('Save and continue'),
     '#weight' => 15,
+    '#button_type' => 'primary',
   );
 
   return $form;