diff --git a/src/ag-window.c b/src/ag-window.c
index e722129..e9ebc0e 100644
--- a/src/ag-window.c
+++ b/src/ag-window.c
@@ -1689,7 +1689,11 @@ ag_window_new(AgApp *app, WebKitUserContentManager *manager)
     priv->chart_web_view = webkit_web_view_new_with_user_content_manager(
             manager
         );
-    gtk_container_add(GTK_CONTAINER(priv->tab_chart), priv->chart_web_view);
+    gtk_box_pack_end(
+            GTK_BOX(priv->tab_chart),
+            priv->chart_web_view,
+            TRUE, TRUE, 0
+        );
 
     // TODO: translate this error message!
     webkit_web_view_load_html(
diff --git a/src/resources/ui/ag-window.ui b/src/resources/ui/ag-window.ui
index ee4e41f..7a43f58 100644
--- a/src/resources/ui/ag-window.ui
+++ b/src/resources/ui/ag-window.ui
@@ -757,9 +757,19 @@
               </packing>
             </child>
             <child>
-              <object class="GtkAlignment" id="tab_chart">
+              <object class="GtkBox" id="tab_chart">
                 <property name="visible">True</property>
                 <property name="can_focus">False</property>
+                <property name="orientation">vertical</property>
+                <child>
+                  <object class="GtkBox">
+                    <property name="visible">True</property>
+                    <property name="can_focus">False</property>
+                  </object>
+                  <packing>
+                    <property name="pack_type">start</property>
+                  </packing>
+                </child>
               </object>
               <packing>
                 <property name="name">chart</property>