diff --git a/src/libsysprof-gtk/sysprof-mark-chart.ui b/src/libsysprof-gtk/sysprof-mark-chart.ui
index 1faede9c..02e3c200 100644
--- a/src/libsysprof-gtk/sysprof-mark-chart.ui
+++ b/src/libsysprof-gtk/sysprof-mark-chart.ui
@@ -22,6 +22,7 @@
     <property name="child">
       <object class="GtkInscription">
         <property name="xalign">0</property>
+        <property name="margin-start">6</property>
         <binding name="text">
           <lookup name="group" type="SysprofMarkCatalog">
             <lookup name="catalog" type="SysprofMarkChartItem">