diff --git a/gtk/theme/Adwaita/_common.scss b/gtk/theme/Adwaita/_common.scss
index 7c0a7ae56b..170a472a86 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;