diff --git a/LEGO1/legoomni.h b/LEGO1/legoomni.h
index cc026d96..e6654af9 100644
--- a/LEGO1/legoomni.h
+++ b/LEGO1/legoomni.h
@@ -16,6 +16,7 @@ class LegoPlantManager;
 class LegoROI;
 class LegoSoundManager;
 class LegoVideoManager;
+class LegoWorld;
 class MxAtomId;
 class MxBackgroundAudioManager;
 class MxDSFile;
diff --git a/LEGO1/mxtransitionmanager.cpp b/LEGO1/mxtransitionmanager.cpp
index ca3a0219..95d041e2 100644
--- a/LEGO1/mxtransitionmanager.cpp
+++ b/LEGO1/mxtransitionmanager.cpp
@@ -3,8 +3,10 @@
 #include "legovideomanager.h"
 #include "legoinputmanager.h"
 #include "legoutil.h"
-#include "mxticklemanager.h"
+#include "legoworld.h"
 #include "mxbackgroundaudiomanager.h"
+#include "mxparam.h"
+#include "mxticklemanager.h"
 
 DECOMP_SIZE_ASSERT(MxTransitionManager, 0x900);