diff --git a/LEGO1/mxregion.cpp b/LEGO1/mxregion.cpp
index ac2353ba..8cdee2c1 100644
--- a/LEGO1/mxregion.cpp
+++ b/LEGO1/mxregion.cpp
@@ -3,6 +3,8 @@
 #include <limits.h>
 
 DECOMP_SIZE_ASSERT(MxRegion, 0x1c);
+DECOMP_SIZE_ASSERT(MxRegionTopBottom, 0x0c);
+DECOMP_SIZE_ASSERT(MxRegionLeftRight, 0x08);
 
 // OFFSET: LEGO1 0x100c31c0
 MxRegion::MxRegion()
diff --git a/LEGO1/mxregionlist.cpp b/LEGO1/mxregionlist.cpp
index a25cda73..92e9a010 100644
--- a/LEGO1/mxregionlist.cpp
+++ b/LEGO1/mxregionlist.cpp
@@ -1,12 +1,6 @@
 #include "mxregionlist.h"
 #include "mxregion.h"
 
-// OFFSET: LEGO1 0x100c4e80
-void MxRegionLeftRightListParent::Destroy(MxRegionLeftRight *p_leftRight)
-{
-  delete p_leftRight;
-}
-
 // OFFSET: LEGO1 0x100c33e0
 void MxRegionListParent::Destroy(MxRegionTopBottom *p_topBottom)
 {
@@ -15,4 +9,10 @@ void MxRegionListParent::Destroy(MxRegionTopBottom *p_topBottom)
       delete p_topBottom->m_leftRightList;
     delete p_topBottom;
   }
+}
+
+// OFFSET: LEGO1 0x100c4e80
+void MxRegionLeftRightListParent::Destroy(MxRegionLeftRight *p_leftRight)
+{
+  delete p_leftRight;
 }
\ No newline at end of file
diff --git a/LEGO1/mxregionlist.h b/LEGO1/mxregionlist.h
index 1dcc8865..435ce1ad 100644
--- a/LEGO1/mxregionlist.h
+++ b/LEGO1/mxregionlist.h
@@ -3,24 +3,8 @@
 
 #include "mxlist.h"
 
-struct MxRegionLeftRight;
 struct MxRegionTopBottom;
-
-// VTABLE 0x100dcc70
-// SIZE 0x18
-class MxRegionLeftRightListParent : public MxList<MxRegionLeftRight*>
-{
-public:
-  static void Destroy(MxRegionLeftRight *p_leftRight);
-
-  MxRegionLeftRightListParent() {
-    m_customDestructor = Destroy;
-  }
-};
-
-// VTABLE 0x100dcc88
-// SIZE 0x18
-class MxRegionLeftRightList : public MxRegionLeftRightListParent {};
+struct MxRegionLeftRight;
 
 // VTABLE 0x100dcb40
 // SIZE 0x18
@@ -38,4 +22,20 @@ public:
 // SIZE 0x18
 class MxRegionList : public MxRegionListParent {};
 
+// VTABLE 0x100dcc70
+// SIZE 0x18
+class MxRegionLeftRightListParent : public MxList<MxRegionLeftRight*>
+{
+public:
+  static void Destroy(MxRegionLeftRight *p_leftRight);
+
+  MxRegionLeftRightListParent() {
+    m_customDestructor = Destroy;
+  }
+};
+
+// VTABLE 0x100dcc88
+// SIZE 0x18
+class MxRegionLeftRightList : public MxRegionLeftRightListParent {};
+
 #endif // MXREGIONLIST_H