diff --git a/LEGO1/lego/legoomni/src/video/legomodelpresenter.cpp b/LEGO1/lego/legoomni/src/video/legomodelpresenter.cpp
index af207540..f32acd48 100644
--- a/LEGO1/lego/legoomni/src/video/legomodelpresenter.cpp
+++ b/LEGO1/lego/legoomni/src/video/legomodelpresenter.cpp
@@ -208,7 +208,7 @@ MxResult LegoModelPresenter::CreateROI(MxDSChunk* p_chunk)
 MxResult LegoModelPresenter::FUN_1007ff70(
 	MxDSChunk& p_chunk,
 	LegoEntity* p_entity,
-	undefined p_roiVisible,
+	MxBool p_roiVisible,
 	LegoWorld* p_world
 )
 {