diff --git a/htdocs/css/openwebrx-header.css b/htdocs/css/openwebrx-header.css
index 4e8601b7..09a19bf5 100644
--- a/htdocs/css/openwebrx-header.css
+++ b/htdocs/css/openwebrx-header.css
@@ -116,7 +116,7 @@
 .openwebrx-main-buttons .button img,
 .openwebrx-main-buttons .button svg {
     height: 38px;
-    filter: drop-shadow(0 0 4px rgba(0, 0, 0, 0.5));
+    filter: drop-shadow(0 0 4px white);
 }
 
 .openwebrx-main-buttons a {
@@ -224,4 +224,4 @@
 
 .openwebrx-rx-details-arrow--up .up {
     display: initial;
-}
\ No newline at end of file
+}