diff --git a/application/controllers/Api.php b/application/controllers/Api.php
index ef31f0e5e..a2bdd5a83 100644
--- a/application/controllers/Api.php
+++ b/application/controllers/Api.php
@@ -552,6 +552,11 @@ class API extends CI_Controller {
 
 		$user_id = $this->api_model->key_userid($obj['key']);
 
+		// Special Case: Yaesu Radio's use CW-U and CW-L which aren't official ADIF Modes. We override this here to CW
+		if (isset($obj['mode']) && (strtoupper($obj['mode']) == 'CW-U' || strtoupper($obj['mode']) == 'CW-L')) {
+			$obj['mode'] = 'CW';
+		}
+
 		// Store Result to Database
 		$this->cat->update($obj, $user_id);