diff --git a/gtk/theme/Adwaita/_common.scss b/gtk/theme/Adwaita/_common.scss
index ab635fed30..b69db89d18 100644
--- a/gtk/theme/Adwaita/_common.scss
+++ b/gtk/theme/Adwaita/_common.scss
@@ -992,6 +992,7 @@ spinbutton {
     @extend %entry;
 
     padding: 0;
+    border-spacing: 0;
 
     %spinbutton_horz_entry {
       min-width: 28px;