diff --git a/htdocs/css/openwebrx.css b/htdocs/css/openwebrx.css
index d61e7d6..30be9a9 100644
--- a/htdocs/css/openwebrx.css
+++ b/htdocs/css/openwebrx.css
@@ -1371,7 +1371,7 @@ img.openwebrx-mirror-img
.openwebrx-slider-button svg {
position:relative;
top: 1px;
- height: 15px;
+ height: 14px;
}
.openwebrx-mute-button svg.muted {
diff --git a/htdocs/gfx/svg-defs.svg b/htdocs/gfx/svg-defs.svg
index 5ecb27f..9207068 100644
--- a/htdocs/gfx/svg-defs.svg
+++ b/htdocs/gfx/svg-defs.svg
@@ -13,5 +13,6 @@