diff --git a/src/calls-call-display.c b/src/calls-call-display.c
index 1fab03b..9694f44 100644
--- a/src/calls-call-display.c
+++ b/src/calls-call-display.c
@@ -135,7 +135,7 @@ timeout_cb (CallsCallDisplay *self)
     }
 
   minutes = (guint)(elapsed / MINUTE);
-  g_string_append_printf (str, "%u:", minutes);
+  g_string_append_printf (str, "%02u:", minutes);
   elapsed -= (minutes * MINUTE);
 
   g_string_append_printf (str, "%02u", (guint)elapsed);
diff --git a/src/ui/call-display.ui b/src/ui/call-display.ui
index e008991..3644d6c 100644
--- a/src/ui/call-display.ui
+++ b/src/ui/call-display.ui
@@ -54,7 +54,7 @@
           <object class="GtkLabel" id="time">
             <property name="visible">True</property>
             <property name="can_focus">False</property>
-            <property name="label" translatable="yes">0:00</property>
+            <property name="label" translatable="yes">00:00</property>
           </object>
         </child>
         <child>