diff --git a/application/controllers/Logbookadvanced.php b/application/controllers/Logbookadvanced.php
index 617b8bbc..b099ab13 100644
--- a/application/controllers/Logbookadvanced.php
+++ b/application/controllers/Logbookadvanced.php
@@ -454,4 +454,4 @@ class Logbookadvanced extends CI_Controller {
 		$this->load->model('user_options_model');
 		$this->user_options_model->set_option('LogbookAdvanced', 'LogbookAdvanced', $obj);
 	}
-}
+}
\ No newline at end of file
diff --git a/application/models/Logbookadvanced_model.php b/application/models/Logbookadvanced_model.php
index 1b892e77..8c46f95a 100644
--- a/application/models/Logbookadvanced_model.php
+++ b/application/models/Logbookadvanced_model.php
@@ -64,11 +64,19 @@ class Logbookadvanced_model extends CI_Model {
 		}
 		if ($searchCriteria['qslSentMethod'] !== '') {
 			$condition = "COL_QSL_SENT_VIA = ?";
+			if ($searchCriteria['qslSentMethod'] == 'N') {
+				$condition = '('.$condition;
+				$condition .= " OR COL_QSL_SENT_VIA OR COL_QSL_SENT_VIA = '')";
+			}
 			$conditions[] = $condition;
 			$binding[] = $searchCriteria['qslSentMethod'];
 		}
 		if ($searchCriteria['qslReceivedMethod'] !== '') {
 			$condition = "COL_QSL_RECV_VIA = ?";
+			if ($searchCriteria['qslReceivedMethod'] == 'N') {
+				$condition = '('.$condition;
+				$condition .= " OR COL_QSL_RECV_VIA OR COL_QSL_RECV_VIA = '')";
+			}
 			$conditions[] = $condition;
 			$binding[] = $searchCriteria['qslReceivedMethod'];
 		}
@@ -438,4 +446,4 @@ class Logbookadvanced_model extends CI_Model {
 
         return $this->db->get()->result();
     }
-}
+}
\ No newline at end of file
diff --git a/application/views/logbookadvanced/index.php b/application/views/logbookadvanced/index.php
index 8b68b98e..fdc32c01 100644
--- a/application/views/logbookadvanced/index.php
+++ b/application/views/logbookadvanced/index.php
@@ -471,4 +471,4 @@ $options = json_decode($options);
     <tbody>
     </tbody>
 </table>
-</div>
+</div>
\ No newline at end of file