diff --git a/htdocs/css/openwebrx.css b/htdocs/css/openwebrx.css
index 02cdd6ce..cc5542ee 100644
--- a/htdocs/css/openwebrx.css
+++ b/htdocs/css/openwebrx.css
@@ -657,7 +657,8 @@ img.openwebrx-mirror-img
 
 #openwebrx-panel-receiver
 {
-	width:110px;
+    width:110px;
+    border: 2px solid transparent;
 }
 
 
diff --git a/htdocs/lib/UI.js b/htdocs/lib/UI.js
index 82a943fe..c01cac10 100644
--- a/htdocs/lib/UI.js
+++ b/htdocs/lib/UI.js
@@ -166,8 +166,8 @@ UI.toggleFrame = function(on) {
         this.frame = on;
         LS.save('ui_frame', on);
         $('#openwebrx-frame-checkbox').attr('checked', on);
-        $('#openwebrx-panel-receiver').css('border', on? '2px solid':'');
-        $('#openwebrx-dialog-bookmark').css('border', on? '2px solid':'');
+        $('#openwebrx-panel-receiver').css( 'border', on ? '2px solid white' : '2px solid transparent');
+        $('#openwebrx-dialog-bookmark').css('border', on ? '2px solid white' : '2px solid transparent');
     }
 };