diff --git a/admin/settings/plugins.php b/admin/settings/plugins.php
index 820d25bf2d8..f5ea9e3fab2 100644
--- a/admin/settings/plugins.php
+++ b/admin/settings/plugins.php
@@ -277,11 +277,18 @@ if ($hassiteconfig) {
     $ADMIN->add('modules', new admin_category('webservicesettings', new lang_string('webservices', 'webservice')));
     // Mobile
     $temp = new admin_settingpage('mobile', new lang_string('mobile','admin'), 'moodle/site:config', false);
-    $enablemobiledocurl = new moodle_url(get_docs_url('Enable_mobile_web_services'));
-    $enablemobiledoclink = html_writer::link($enablemobiledocurl, new lang_string('documentation'));
-    $temp->add(new admin_setting_enablemobileservice('enablemobilewebservice',
-            new lang_string('enablemobilewebservice', 'admin'),
-            new lang_string('configenablemobilewebservice', 'admin', $enablemobiledoclink), 0));
+
+    // We should wait to the installation to finish since we depend on some configuration values that are set once
+    // the admin user profile is configured.
+    if (!during_initial_install()) {
+        $enablemobiledocurl = new moodle_url(get_docs_url('Enable_mobile_web_services'));
+        $enablemobiledoclink = html_writer::link($enablemobiledocurl, new lang_string('documentation'));
+        $default = is_https() ? 1 : 0;
+        $temp->add(new admin_setting_enablemobileservice('enablemobilewebservice',
+                new lang_string('enablemobilewebservice', 'admin'),
+                new lang_string('configenablemobilewebservice', 'admin', $enablemobiledoclink), $default));
+    }
+
     $temp->add(new admin_setting_configtext('mobilecssurl', new lang_string('mobilecssurl', 'admin'), new lang_string('configmobilecssurl','admin'), '', PARAM_URL));
     $ADMIN->add('webservicesettings', $temp);
     /// overview page
diff --git a/lib/adminlib.php b/lib/adminlib.php
index debcc5f1e21..ce151b9ff81 100644
--- a/lib/adminlib.php
+++ b/lib/adminlib.php
@@ -7691,6 +7691,12 @@ class admin_setting_enablemobileservice extends admin_setting_configcheckbox {
     public function get_setting() {
         global $CFG;
 
+        // First check if is not set.
+        $result = $this->config_read($this->name);
+        if (is_null($result)) {
+            return null;
+        }
+
         // For install cli script, $CFG->defaultuserroleid is not set so return 0
         // Or if web services aren't enabled this can't be,
         if (empty($CFG->defaultuserroleid) || empty($CFG->enablewebservices)) {
@@ -7701,7 +7707,7 @@ class admin_setting_enablemobileservice extends admin_setting_configcheckbox {
         $webservicemanager = new webservice();
         $mobileservice = $webservicemanager->get_external_service_by_shortname(MOODLE_OFFICIAL_MOBILE_SERVICE);
         if ($mobileservice->enabled and $this->is_protocol_cap_allowed()) {
-            return $this->config_read($this->name); //same as returning 1
+            return $result;
         } else {
             return 0;
         }