diff --git a/data/ui/book_detail.blp b/data/ui/book_detail.blp
index 8d73562e..6e7fbb79 100644
--- a/data/ui/book_detail.blp
+++ b/data/ui/book_detail.blp
@@ -136,7 +136,7 @@ template $BookDetail: Adw.NavigationPage {
 
 
                   Button play_button {
-                    halign: start;
+                    halign: end;
                     valign: end;
                     vexpand: true;
                     margin-top: 12;