diff --git a/gtk-4.0/gtk.css b/gtk-4.0/gtk.css
index e280513..f54345e 100644
--- a/gtk-4.0/gtk.css
+++ b/gtk-4.0/gtk.css
@@ -285,7 +285,7 @@ iconview :selected {
 
 iconview :selected:focus-within {
 	border: none;
-	alpha(@theme_selected_bg_color, 0.75);
+	background-color: alpha(@theme_selected_bg_color, 0.75);
 	color: @theme_selected_fg_color;
 	
 }