diff --git a/LEGO1/lego/legoomni/include/legopathactor.h b/LEGO1/lego/legoomni/include/legopathactor.h
index 087b8296..242d46b6 100644
--- a/LEGO1/lego/legoomni/include/legopathactor.h
+++ b/LEGO1/lego/legoomni/include/legopathactor.h
@@ -59,7 +59,7 @@ class LegoPathActor : public LegoActor {
 	virtual MxBool GetUserNavFlag() { return m_userNavFlag; } // vtable+0x7c
 
 	virtual MxResult VTable0x80(
-		Vector3& p_point1,
+		const Vector3& p_point1,
 		Vector3& p_point2,
 		Vector3& p_point3,
 		Vector3& p_point4
diff --git a/LEGO1/lego/legoomni/src/paths/legopathactor.cpp b/LEGO1/lego/legoomni/src/paths/legopathactor.cpp
index 239f704f..9aa817c3 100644
--- a/LEGO1/lego/legoomni/src/paths/legopathactor.cpp
+++ b/LEGO1/lego/legoomni/src/paths/legopathactor.cpp
@@ -64,7 +64,7 @@ LegoPathActor::~LegoPathActor()
 }
 
 // FUNCTION: LEGO1 0x1002d8d0
-MxResult LegoPathActor::VTable0x80(Vector3& p_point1, Vector3& p_point2, Vector3& p_point3, Vector3& p_point4)
+MxResult LegoPathActor::VTable0x80(const Vector3& p_point1, Vector3& p_point2, Vector3& p_point3, Vector3& p_point4)
 {
 	Mx3DPointFloat p1, p2, p3;
 
diff --git a/LEGO1/lego/sources/misc/legounknown.cpp b/LEGO1/lego/sources/misc/legounknown.cpp
index b3976b51..67e1423c 100644
--- a/LEGO1/lego/sources/misc/legounknown.cpp
+++ b/LEGO1/lego/sources/misc/legounknown.cpp
@@ -16,7 +16,7 @@ LegoUnknown::~LegoUnknown()
 }
 
 // FUNCTION: LEGO1 0x1009a140
-void LegoUnknown::FUN_1009a140(Vector3& p_point1, Vector3& p_point2, Vector3& p_point3, Vector3& p_point4)
+void LegoUnknown::FUN_1009a140(const Vector3& p_point1, Vector3& p_point2, Vector3& p_point3, Vector3& p_point4)
 {
 	m_unk0x00[0] = p_point1;
 	m_unk0x00[1] = p_point2;
diff --git a/LEGO1/lego/sources/misc/legounknown.h b/LEGO1/lego/sources/misc/legounknown.h
index 1d0d1aef..cc7a467b 100644
--- a/LEGO1/lego/sources/misc/legounknown.h
+++ b/LEGO1/lego/sources/misc/legounknown.h
@@ -12,7 +12,7 @@ class LegoUnknown {
 	LegoUnknown();
 	~LegoUnknown();
 
-	void FUN_1009a140(Vector3& p_point1, Vector3& p_point2, Vector3& p_point3, Vector3& p_point4);
+	void FUN_1009a140(const Vector3& p_point1, Vector3& p_point2, Vector3& p_point3, Vector3& p_point4);
 	LegoResult FUN_1009a1e0(float p_f1, Matrix4& p_mat, Vector3& p_v, LegoU32 p_und);
 
 private: