diff --git a/application/controllers/Installation.php b/application/controllers/Installation.php
index 18dffb83..5c3eb8fe 100644
--- a/application/controllers/Installation.php
+++ b/application/controllers/Installation.php
@@ -143,7 +143,7 @@ class Installation extends CI_Controller {
             $services['id'] = $this->services_model->add($services);
 
             $salt = generate_salt();
-            $password = random_string('sha1', 12);
+            $password = random_string('alnum', 12);
 
             $sample_provider = [
                 'first_name' => 'John',
diff --git a/application/models/User_model.php b/application/models/User_model.php
index 376a8c90..417734aa 100644
--- a/application/models/User_model.php
+++ b/application/models/User_model.php
@@ -186,7 +186,7 @@ class User_Model extends CI_Model {
         $user_id = $result->row()->id;
 
         // Create a new password and send it with an email to the given email address.
-        $new_password = random_string('sha1', 12);
+        $new_password = random_string('alnum', 12);
         $salt = $this->db->get_where('user_settings', ['id_users' => $user_id])->row()->salt;
         $hash_password = hash_password($salt, $new_password);
         $this->db->update('user_settings', ['password' => $hash_password], ['id_users' => $user_id]);