diff --git a/src/gui/gcal-window.ui b/src/gui/gcal-window.ui
index c58662874dca2a28f70a534e470793c3d396a58a..50a67aeca5aada39bc5737651162378e01d74ef6 100644
--- a/src/gui/gcal-window.ui
+++ b/src/gui/gcal-window.ui
@@ -98,6 +98,12 @@
             <property name="action">action(win.show-calendars)</property>
           </object>
         </child>
+        <child>
+          <object class="GtkShortcut">
+            <property name="trigger">&lt;Ctrl&gt;r</property>
+            <property name="action">action(app.sync)</property>
+          </object>
+        </child>
         <child>
           <object class="GtkShortcut">
             <property name="trigger">F5</property>
diff --git a/src/gui/gtk/help-overlay.ui b/src/gui/gtk/help-overlay.ui
index 6965f88648bd954564fdc889e73115d015b721c1..ea4fc9d6e82a449a2e9e09525e6ad6cbeb2bdda7 100644
--- a/src/gui/gtk/help-overlay.ui
+++ b/src/gui/gtk/help-overlay.ui
@@ -24,7 +24,7 @@
             <child>
               <object class="GtkShortcutsShortcut">
                 <property name="title" translatable="yes" context="shortcut window">Synchronize calendars</property>
-                <property name="accelerator">F5</property>
+                <property name="accelerator">F5 &lt;Ctrl&gt;r</property>
               </object>
             </child>
             <child>