diff --git a/data/theme/gnome-shell-sass/widgets/_ibus-popup.scss b/data/theme/gnome-shell-sass/widgets/_ibus-popup.scss
index 648c375c4..bedc31186 100644
--- a/data/theme/gnome-shell-sass/widgets/_ibus-popup.scss
+++ b/data/theme/gnome-shell-sass/widgets/_ibus-popup.scss
@@ -7,6 +7,7 @@
 .candidate-popup-content {
   padding: $base_padding;
   spacing: $base_padding;
+  border-radius: $base_padding * 2;
   @extend .popup-menu-content;
 }