diff --git a/src/sysprof/ui/sysprof-window.ui b/src/sysprof/ui/sysprof-window.ui
index e718bcd9..b92247d5 100644
--- a/src/sysprof/ui/sysprof-window.ui
+++ b/src/sysprof/ui/sysprof-window.ui
@@ -172,9 +172,27 @@
                   </object>
                 </child>
                 <child>
-                  <object class="SysprofCallgraphView" id="callgraph_view">
-                    <property name="visible">true</property>
+                  <object class="GtkNotebook" id="notebook">
                     <property name="vexpand">true</property>
+                    <property name="visible">true</property>
+                    <child>
+                      <object class="SysprofCallgraphView" id="callgraph_view">
+                        <property name="visible">true</property>
+                        <property name="vexpand">true</property>
+                      </object>
+                      <packing>
+                        <property name="tab-label" translatable="yes">Callgraph</property>
+                      </packing>
+                    </child>
+                    <child>
+                      <object class="SysprofMarksView" id="marks_view">
+                        <property name="visible">true</property>
+                        <property name="vexpand">true</property>
+                      </object>
+                      <packing>
+                        <property name="tab-label" translatable="yes">Marks</property>
+                      </packing>
+                    </child>
                   </object>
                 </child>
               </object>