diff --git a/dbus/org.freedesktop.MediaPlayer.player.xml b/dbus/org.freedesktop.MediaPlayer.player.xml
index df99db0..d029b4b 100644
--- a/dbus/org.freedesktop.MediaPlayer.player.xml
+++ b/dbus/org.freedesktop.MediaPlayer.player.xml
@@ -1,66 +1,66 @@
 <!DOCTYPE node PUBLIC "-//freedesktop//DTD D-BUS Object Introspection 1.0//EN"
 "http://www.freedesktop.org/standards/dbus/1.0/introspect.dtd">
 
 <node>
   <interface name="org.freedesktop.MediaPlayer">
 
     <method name="Pause">
     </method>
 
     <method name="Stop">
     </method>
 
     <method name="Play">
     </method>
 
     <method name="Prev">
     </method>
 
     <method name="Next">
     </method>
 
     <method name="Repeat">
         <arg type="b" direction="in"/>
     </method>
 
     <method name="GetStatus">
         <arg type="(iiii)" direction="out"/>
         <annotation name="org.qtproject.QtDBus.QtTypeName.Out0" value="DBusStatus"/>
     </method>
 
     <method name="VolumeSet">
         <arg type="i" direction="in"/>
     </method>
 
     <method name="VolumeGet">
         <arg type="i" direction="out"/>
     </method>
 
     <method name="PositionSet">
         <arg type="i" direction="in"/>
     </method>
 
     <method name="PositionGet">
         <arg type="i" direction="out"/>
     </method>
 
     <method name="GetCaps">
         <arg type="i" direction="out" />
     </method>
 
     <signal name="TrackChange">
-        <arg type="a{sv}"/>
+        <arg type="a{sv}" direction="in"/>
         <annotation name="org.qtproject.QtDBus.QtTypeName.In0" value="QVariantMap"/>
     </signal>
 
     <signal name="StatusChange">
         <arg type="(iiii)"/>
         <annotation name="org.qtproject.QtDBus.QtTypeName.In0" value="DBusStatus"/>
     </signal>
 
     <signal name="CapsChange">
         <arg type="i" />
     </signal>
 
   </interface>
 </node>