diff --git a/application/controllers/Adif.php b/application/controllers/Adif.php
index ce2cca170..dcdcaafbc 100644
--- a/application/controllers/Adif.php
+++ b/application/controllers/Adif.php
@@ -193,7 +193,7 @@ class adif extends CI_Controller {
 				$f_elements=explode(".",$fdata['upload_data']['file_name']);
 				if (strtolower($f_elements[count($f_elements)-1])=='zip') {
 					$f_adif = preg_replace('/\\.zip$/', '', $fdata['upload_data']['file_name']);
-					$p_adif = preg_replace('/^(.*)(_)(\S{2,4})$/', '$1.$3', $f_adif);	// Bug in CodeIgniter. Destroys Filename if there is more than one dot.
+					$p_adif = hash('sha256', $this->session->userdata('user_callsign') ).'.adif';
 					if (preg_match("/.*\.adi.?$/",strtolower($p_adif))) {	// Check if adi? inside zip
 						$zip = new ZipArchive;
 						if ($zip->open('./uploads/'.$fdata['upload_data']['file_name'])) {
diff --git a/application/views/adif/import.php b/application/views/adif/import.php
index a93c36a80..70873d466 100644
--- a/application/views/adif/import.php
+++ b/application/views/adif/import.php
@@ -56,6 +56,7 @@
                     <p><span class="badge text-bg-warning"><?php echo lang('general_word_warning') ?></span> <?php echo lang('gen_max_file_upload_size') ?><?php echo $max_upload; ?>B.</p>
 
                     <form class="form" id="upform" action="<?php echo site_url('adif/import'); ?>" method="post" enctype="multipart/form-data">
+			<input type="hidden" name="fhash" id="fhash" value="<?php echo hash('sha256', $this->session->userdata('user_callsign') );?>">
                         <select name="station_profile" class="form-select mb-2 me-sm-2" style="width: 20%;">
                             <option value="0"><?php echo lang('adif_select_stationlocation') ?></option>
                             <?php foreach ($station_profile->result() as $station) { ?>