diff --git a/gemgraph/main.py b/gemgraph/main.py
index 81e3aa3..86591de 100644
--- a/gemgraph/main.py
+++ b/gemgraph/main.py
@@ -39,6 +39,7 @@ class GemGraphApplication(Adw.Application):
         self.create_action('editmode', self.on_editmode_action, ['<primary>e'])
         self.create_action('runmode', self.on_runmode_action, ['<primary>r'])
         self.create_action('presentmode', self.on_presentmode_action, ['<primary>p'])
+        self.create_action('togglesidebar', self.on_togglesidebar_action)
 
     def do_activate(self):
         """Called when the application is activated.
@@ -62,17 +63,21 @@ class GemGraphApplication(Adw.Application):
         print('app.preferences action activated')
 
     def on_editmode_action(self, widget, _):
-        """Callback for the app.preferences action."""
+        """Callback for the app.editmode action."""
         print('app.editmode action activated')
 
     def on_runmode_action(self, widget, _):
-        """Callback for the app.preferences action."""
+        """Callback for the app.runmode action."""
         print('app.runmode action activated')
 
     def on_presentmode_action(self, widget, _):
-        """Callback for the app.preferences action."""
+        """Callback for the app.presentmode action."""
         print('app.presentmode action activated')
 
+    def on_togglesidebar_action(self, widget, _):
+        """Callback for the app.togglesidebar action."""
+        print('app.togglesidebar action activated')
+
     def create_action(self, name, callback, shortcuts=None):
         """Add an application action.
 
diff --git a/gemgraph/window.py b/gemgraph/window.py
index 1abd0c8..e3a00a0 100644
--- a/gemgraph/window.py
+++ b/gemgraph/window.py
@@ -41,3 +41,4 @@ class AboutDialog(Gtk.AboutDialog):
         self.props.logo_icon_name = 'application-x-executable'
         self.props.modal = True
         self.set_transient_for(parent)
+
diff --git a/ui/gemgraph.ui b/ui/gemgraph.ui
index dc80303..d29256d 100644
--- a/ui/gemgraph.ui
+++ b/ui/gemgraph.ui
@@ -30,6 +30,7 @@
           <object class="GtkToggleButton" id="main_button_sidebar">
             <property name="icon-name">sidebar-show-symbolic</property>
             <property name="tooltip-text" translatable="yes">Display/hide sidebar</property>
+	    <property name="action-name">app.togglesidebar</property>
           </object>
           <!-- <object class="GtkLabel" id="is_modified"> -->
           <!--   <property name="halign">end</property> -->