diff --git a/gtk/theme/Adwaita/_common.scss b/gtk/theme/Adwaita/_common.scss
index c8ed44924c..6fc2062a26 100644
--- a/gtk/theme/Adwaita/_common.scss
+++ b/gtk/theme/Adwaita/_common.scss
@@ -924,6 +924,7 @@ spinbutton {
     padding: 0;
 
     entry {
+      min-width: 28px;
       margin: 0;
       background: none;
       border: none;
diff --git a/gtk/theme/Adwaita/gtk-contained-dark.css b/gtk/theme/Adwaita/gtk-contained-dark.css
index 92b261dafe..e41c8a7de5 100644
--- a/gtk/theme/Adwaita/gtk-contained-dark.css
+++ b/gtk/theme/Adwaita/gtk-contained-dark.css
@@ -1240,6 +1240,7 @@ button:visited {
 spinbutton:not(.vertical) {
   padding: 0; }
   spinbutton:not(.vertical) entry, spinbutton:not(.vertical) spinbutton:not(.vertical) {
+    min-width: 28px;
     margin: 0;
     background: none;
     border: none;
diff --git a/gtk/theme/Adwaita/gtk-contained.css b/gtk/theme/Adwaita/gtk-contained.css
index f981dbde8b..dd0eab1d01 100644
--- a/gtk/theme/Adwaita/gtk-contained.css
+++ b/gtk/theme/Adwaita/gtk-contained.css
@@ -1244,6 +1244,7 @@ button:visited {
 spinbutton:not(.vertical) {
   padding: 0; }
   spinbutton:not(.vertical) entry, spinbutton:not(.vertical) spinbutton:not(.vertical) {
+    min-width: 28px;
     margin: 0;
     background: none;
     border: none;