diff --git a/gtk/theme/Adwaita/_common.scss b/gtk/theme/Adwaita/_common.scss
index be8ba06f82..2587c87dfd 100644
--- a/gtk/theme/Adwaita/_common.scss
+++ b/gtk/theme/Adwaita/_common.scss
@@ -35,6 +35,9 @@ $ease-out-quad: cubic-bezier(0.25, 0.46, 0.45, 0.94);
   -GtkWidget-focus-padding: 2;    // FIXME: do we still need these?
   -GtkWidget-focus-line-width: 1; //
 
+  -GtkWidget-text-handle-width: 20;
+  -GtkWidget-text-handle-height: 20;
+
   -GtkDialog-button-spacing: 4;
   -GtkDialog-action-area-border: 0;
 
diff --git a/gtk/theme/Adwaita/gtk-contained-dark.css b/gtk/theme/Adwaita/gtk-contained-dark.css
index bebcee6be0..dbed75652b 100644
--- a/gtk/theme/Adwaita/gtk-contained-dark.css
+++ b/gtk/theme/Adwaita/gtk-contained-dark.css
@@ -16,6 +16,8 @@
   -GtkWidget-visited-link-color: #2a76c6;
   -GtkWidget-focus-padding: 2;
   -GtkWidget-focus-line-width: 1;
+  -GtkWidget-text-handle-width: 20;
+  -GtkWidget-text-handle-height: 20;
   -GtkDialog-button-spacing: 4;
   -GtkDialog-action-area-border: 0;
   -GtkStatusbar-shadow-type: none;
diff --git a/gtk/theme/Adwaita/gtk-contained.css b/gtk/theme/Adwaita/gtk-contained.css
index 7078d62b7c..f6e9e780c8 100644
--- a/gtk/theme/Adwaita/gtk-contained.css
+++ b/gtk/theme/Adwaita/gtk-contained.css
@@ -16,6 +16,8 @@
   -GtkWidget-visited-link-color: #215d9c;
   -GtkWidget-focus-padding: 2;
   -GtkWidget-focus-line-width: 1;
+  -GtkWidget-text-handle-width: 20;
+  -GtkWidget-text-handle-height: 20;
   -GtkDialog-button-spacing: 4;
   -GtkDialog-action-area-border: 0;
   -GtkStatusbar-shadow-type: none;