diff --git a/LEGO1/mxdisplaysurface.cpp b/LEGO1/mxdisplaysurface.cpp
index 4f02aeb6..f2a4aa2f 100644
--- a/LEGO1/mxdisplaysurface.cpp
+++ b/LEGO1/mxdisplaysurface.cpp
@@ -230,3 +230,9 @@ undefined4 MxDisplaySurface::vtable44(undefined4, undefined4*, undefined4, undef
 {
   return 0;
 }
+
+// OFFSET: LEGO1 0x100ba640 STUB
+void MxDisplaySurface::FUN_100ba640(MxDisplaySurface *p_displaySurface)
+{
+  // TODO
+}
diff --git a/LEGO1/mxdisplaysurface.h b/LEGO1/mxdisplaysurface.h
index 4c2c3866..1d5f4ce1 100644
--- a/LEGO1/mxdisplaysurface.h
+++ b/LEGO1/mxdisplaysurface.h
@@ -19,6 +19,8 @@ class MxDisplaySurface : public MxCore
 
   void Reset();
 
+  static void FUN_100ba640(MxDisplaySurface *p_displaySurface);
+
   virtual MxResult Init(MxVideoParam &p_videoParam, LPDIRECTDRAWSURFACE p_ddSurface1, LPDIRECTDRAWSURFACE p_ddSurface2, LPDIRECTDRAWCLIPPER p_ddClipper);
   virtual MxResult Create(MxVideoParam &p_videoParam);
   virtual void Clear();
diff --git a/LEGO1/mxtransitionmanager.cpp b/LEGO1/mxtransitionmanager.cpp
index eb18d181..368fd8e7 100644
--- a/LEGO1/mxtransitionmanager.cpp
+++ b/LEGO1/mxtransitionmanager.cpp
@@ -98,12 +98,20 @@ MxResult MxTransitionManager::StartTransition(TransitionType p_animationType, Mx
   return FAILURE;
 }
 
-// OFFSET: LEGO1 0x1004bcf0 STUB
-void MxTransitionManager::FUN_1004bcf0()
+// OFFSET: LEGO1 0x1004bc30 STUB
+void MxTransitionManager::EndTransition(MxBool p_unk)
 {
   // TODO
 }
 
+// OFFSET: LEGO1 0x1004bcf0
+void MxTransitionManager::FUN_1004bcf0()
+{
+  LegoVideoManager *videoManager = VideoManager();
+  MxDisplaySurface::FUN_100ba640(videoManager->GetDisplaySurface());
+  EndTransition(TRUE);
+}
+
 // OFFSET: LEGO1 0x1004bd10 STUB
 void MxTransitionManager::FUN_1004bd10()
 {
diff --git a/LEGO1/mxtransitionmanager.h b/LEGO1/mxtransitionmanager.h
index 00d87792..b42438a5 100644
--- a/LEGO1/mxtransitionmanager.h
+++ b/LEGO1/mxtransitionmanager.h
@@ -42,6 +42,8 @@ class MxTransitionManager : public MxCore
 
   MxResult StartTransition(TransitionType p_animationType, MxS32 p_speed, undefined p_unk, MxBool p_playMusicInAnim);
 
+  void MxTransitionManager::EndTransition(MxBool p_unk);
+
   void FUN_1004bcf0();
   void FUN_1004bd10();
   void FUN_1004bed0();