diff --git a/src/libsysprof-gtk/sysprof-mark-table.ui b/src/libsysprof-gtk/sysprof-mark-table.ui
index b2d0b53c..07ab3894 100644
--- a/src/libsysprof-gtk/sysprof-mark-table.ui
+++ b/src/libsysprof-gtk/sysprof-mark-table.ui
@@ -76,6 +76,7 @@
     <property name="child">
       <object class="GtkLabel">
         <property name="xalign">0</property>
+        <property name="single-line-mode">true</property>
         <binding name="label">
           <lookup name="group" type="SysprofDocumentMark">
             <lookup name="item">GtkListItem</lookup>
@@ -103,6 +104,7 @@
     <property name="child">
       <object class="GtkLabel">
         <property name="xalign">0</property>
+        <property name="single-line-mode">true</property>
         <binding name="label">
           <lookup name="name" type="SysprofDocumentMark">
             <lookup name="item">GtkListItem</lookup>
@@ -131,6 +133,7 @@
     <property name="child">
       <object class="GtkLabel">
         <property name="xalign">0</property>
+        <property name="single-line-mode">true</property>
         <binding name="label">
           <lookup name="message" type="SysprofDocumentMark">
             <lookup name="item">GtkListItem</lookup>
diff --git a/src/libsysprof-gtk/sysprof-time-label.c b/src/libsysprof-gtk/sysprof-time-label.c
index 56760ada..39ec499e 100644
--- a/src/libsysprof-gtk/sysprof-time-label.c
+++ b/src/libsysprof-gtk/sysprof-time-label.c
@@ -139,6 +139,7 @@ sysprof_time_label_init (SysprofTimeLabel *self)
 {
   self->label = g_object_new (GTK_TYPE_LABEL,
                               "xalign", 1.f,
+                              "single-line-mode", TRUE,
                               NULL);
   gtk_widget_set_parent (GTK_WIDGET (self->label), GTK_WIDGET (self));
 }