diff --git a/src/gui/widgets/timeline/group-track.cpp b/src/gui/widgets/timeline/group-track.cpp
index d44196f79..ae48351ba 100644
--- a/src/gui/widgets/timeline/group-track.cpp
+++ b/src/gui/widgets/timeline/group-track.cpp
@@ -33,13 +33,13 @@ GroupTrack::GroupTrack()
 }
   
 void
-GroupTrack::add_child_track(timeline::Track* child)
+GroupTrack::add_child_track(Track* child)
 {
   REQUIRE(child != NULL);
   children.push_back(child);
 }
 
-const std::vector<timeline::Track*>&
+const std::vector<Track*>&
 GroupTrack::get_child_tracks() const
 {
   return children;
diff --git a/src/gui/widgets/timeline/group-track.hpp b/src/gui/widgets/timeline/group-track.hpp
index 665036ee9..875584aa8 100644
--- a/src/gui/widgets/timeline/group-track.hpp
+++ b/src/gui/widgets/timeline/group-track.hpp
@@ -37,9 +37,9 @@ class GroupTrack : public Track
 public:
   GroupTrack();
   
-  void add_child_track(timeline::Track* child);
+  void add_child_track(Track* child);
   
-  const std::vector<timeline::Track*>& get_child_tracks() const;
+  const std::vector<Track*>& get_child_tracks() const;
   
   virtual void draw_track(Cairo::RefPtr<Cairo::Context> cairo,
     TimelineViewWindow* constwindow)
@@ -47,7 +47,7 @@ public:
     
 private:
   //----- Data -----//
-  std::vector<timeline::Track*> children;
+  std::vector<Track*> children;
 };
 
 }   // namespace timeline