diff --git a/gtk/resources/theme/Adwaita/_common.scss b/gtk/resources/theme/Adwaita/_common.scss
index b240e35fc8..44dc302f71 100644
--- a/gtk/resources/theme/Adwaita/_common.scss
+++ b/gtk/resources/theme/Adwaita/_common.scss
@@ -339,6 +339,7 @@ GtkLabel {
                               (destructive-action, $destructive_color) {
     &.#{$b_type} {
       @include button(normal,$b_color, white);
+      outline-color: transparentize($selected_fg_color, 0.7);
       &:hover {
         @include button(hover,$b_color, white);
       }
diff --git a/gtk/resources/theme/Adwaita/gtk-contained-dark.css b/gtk/resources/theme/Adwaita/gtk-contained-dark.css
index f105980f6e..42f5b16631 100644
--- a/gtk/resources/theme/Adwaita/gtk-contained-dark.css
+++ b/gtk/resources/theme/Adwaita/gtk-contained-dark.css
@@ -394,7 +394,8 @@
     border-color: #0b1e33;
     text-shadow: 0 -1px rgba(0, 0, 0, 0.70353);
     icon-shadow: 0 -1px rgba(0, 0, 0, 0.70353);
-    box-shadow: inset 0 1px rgba(255, 255, 255, 0.1), 0 1px rgba(238, 238, 236, 0.1); }
+    box-shadow: inset 0 1px rgba(255, 255, 255, 0.1), 0 1px rgba(238, 238, 236, 0.1);
+    outline-color: rgba(255, 255, 255, 0.3); }
     .button.suggested-action:hover {
       border-style: solid;
       color: white;
@@ -441,7 +442,8 @@
     border-color: #5e0707;
     text-shadow: 0 -1px rgba(0, 0, 0, 0.64078);
     icon-shadow: 0 -1px rgba(0, 0, 0, 0.64078);
-    box-shadow: inset 0 1px rgba(255, 255, 255, 0.1), 0 1px rgba(238, 238, 236, 0.1); }
+    box-shadow: inset 0 1px rgba(255, 255, 255, 0.1), 0 1px rgba(238, 238, 236, 0.1);
+    outline-color: rgba(255, 255, 255, 0.3); }
     .button.destructive-action:hover {
       border-style: solid;
       color: white;
diff --git a/gtk/resources/theme/Adwaita/gtk-contained.css b/gtk/resources/theme/Adwaita/gtk-contained.css
index 63f87d47a7..71d5726796 100644
--- a/gtk/resources/theme/Adwaita/gtk-contained.css
+++ b/gtk/resources/theme/Adwaita/gtk-contained.css
@@ -386,7 +386,8 @@
     border-color: #1c5187;
     text-shadow: 0 -1px rgba(0, 0, 0, 0.54353);
     icon-shadow: 0 -1px rgba(0, 0, 0, 0.54353);
-    box-shadow: inset 0 1px rgba(255, 255, 255, 0.1), 0 1px white; }
+    box-shadow: inset 0 1px rgba(255, 255, 255, 0.1), 0 1px white;
+    outline-color: rgba(255, 255, 255, 0.3); }
     .button.suggested-action:hover {
       border-style: solid;
       color: white;
@@ -433,7 +434,8 @@
     border-color: #8e0b0b;
     text-shadow: 0 -1px rgba(0, 0, 0, 0.56078);
     icon-shadow: 0 -1px rgba(0, 0, 0, 0.56078);
-    box-shadow: inset 0 1px rgba(255, 255, 255, 0.1), 0 1px white; }
+    box-shadow: inset 0 1px rgba(255, 255, 255, 0.1), 0 1px white;
+    outline-color: rgba(255, 255, 255, 0.3); }
     .button.destructive-action:hover {
       border-style: solid;
       color: white;