diff --git a/prefs.js b/prefs.js
index a997d24..f389e74 100644
--- a/prefs.js
+++ b/prefs.js
@@ -405,9 +405,14 @@ var PreferencesDialog = class PreferencesDialog {
           const dialog = this._builder.get_object('support-dialog');
           dialog.set_transient_for(window);
           dialog.connect('response', (dialog, response) => {
-            if (response === 'never') {
+            if ((utils.isADW() && response === 'never') ||
+                (!utils.isADW() && response === 2)) {
               this._settings.set_boolean('show-support-dialog', false);
             }
+
+            if (!utils.isGTK4()) {
+              dialog.close();
+            }
           });
           dialog.show();
         }
diff --git a/resources/ui/gtk3/prefs.ui b/resources/ui/gtk3/prefs.ui
index badce07..9b455e3 100644
--- a/resources/ui/gtk3/prefs.ui
+++ b/resources/ui/gtk3/prefs.ui
@@ -67,6 +67,55 @@ SPDX-License-Identifier: GPL-3.0-or-later
     </style>
   </object>
 
+  <!-- This dialog is occasionaly shown to ask the user for support. -->
+  <object class="GtkMessageDialog" id="support-dialog">
+    <property name="text">Do you want to support Burn-My-Windows?</property>
+    <property name="secondary-text">If only one out of ten users would support this project with 1$ / month, I could work full-time on open-source projects!</property>
+    <property name="modal">true</property>
+    <child internal-child="vbox">
+      <object class="GtkBox">
+        <child internal-child="message_area">
+          <object class="GtkBox">
+            <child>
+              <object class="GtkLabel">
+                <property name="hexpand">true</property>
+                <property name="halign">start</property>
+                <property name="use-markup">true</property>
+                <property name="label">Support me on Ko-fi: &lt;a href='https://ko-fi.com/schneegans'&gt;https://ko-fi.com/schneegans&lt;/a&gt;</property>
+              </object>
+            </child>
+            <child>
+              <object class="GtkLabel">
+                <property name="hexpand">true</property>
+                <property name="halign">start</property>
+                <property name="use-markup">true</property>
+                <property name="label">Support me on GitHub: &lt;a href='https://github.com/sponsors/schneegans'&gt;https://github.com/sponsors/schneegans&lt;/a&gt;</property>
+              </object>
+            </child>
+          </object>
+        </child>
+        <child internal-child="action_area">
+          <object class="GtkHButtonBox">
+            <child>
+              <object class="GtkButton" id="support_never_button">
+                <property name="label">Do not show this again!</property>
+              </object>
+            </child>
+            <child>
+              <object class="GtkButton" id="support_later_button">
+                <property name="label">Maybe later...</property>
+              </object>
+            </child>
+          </object>
+        </child>
+      </object>
+    </child>
+    <action-widgets>
+      <action-widget response="1" default="true">support_later_button</action-widget>
+      <action-widget response="2">support_never_button</action-widget>
+    </action-widgets>
+  </object>
+
   <object class="GtkStack" id="general-prefs">
     <property name="transition-type">over-down-up</property>
 
diff --git a/resources/ui/gtk4/prefs.ui b/resources/ui/gtk4/prefs.ui
index 9c1d507..c362bc8 100644
--- a/resources/ui/gtk4/prefs.ui
+++ b/resources/ui/gtk4/prefs.ui
@@ -33,6 +33,55 @@ SPDX-License-Identifier: GPL-3.0-or-later
     </style>
   </object>
 
+  <!-- This dialog is occasionaly shown to ask the user for support. -->
+  <object class="GtkMessageDialog" id="support-dialog">
+    <property name="text">Do you want to support Burn-My-Windows?</property>
+    <property name="secondary-text">If only one out of ten users would support this project with 1$ / month, I could work full-time on open-source projects!</property>
+    <property name="modal">true</property>
+    <child internal-child="vbox">
+      <object class="GtkBox">
+        <child internal-child="message_area">
+          <object class="GtkBox">
+            <child>
+              <object class="GtkLabel">
+                <property name="hexpand">true</property>
+                <property name="halign">start</property>
+                <property name="use-markup">true</property>
+                <property name="label">Support me on Ko-fi: &lt;a href='https://ko-fi.com/schneegans'&gt;https://ko-fi.com/schneegans&lt;/a&gt;</property>
+              </object>
+            </child>
+            <child>
+              <object class="GtkLabel">
+                <property name="hexpand">true</property>
+                <property name="halign">start</property>
+                <property name="use-markup">true</property>
+                <property name="label">Support me on GitHub: &lt;a href='https://github.com/sponsors/schneegans'&gt;https://github.com/sponsors/schneegans&lt;/a&gt;</property>
+              </object>
+            </child>
+          </object>
+        </child>
+        <child internal-child="action_area">
+          <object class="GtkHButtonBox">
+            <child>
+              <object class="GtkButton" id="support_never_button">
+                <property name="label">Do not show this again!</property>
+              </object>
+            </child>
+            <child>
+              <object class="GtkButton" id="support_later_button">
+                <property name="label">Maybe later...</property>
+              </object>
+            </child>
+          </object>
+        </child>
+      </object>
+    </child>
+    <action-widgets>
+      <action-widget response="1" default="true">support_later_button</action-widget>
+      <action-widget response="2">support_never_button</action-widget>
+    </action-widgets>
+  </object>
+
   <object class="GtkStack" id="general-prefs">
     <property name="transition-type">over-down-up</property>