diff --git a/LEGO1/mxloopingsmkpresenter.cpp b/LEGO1/mxloopingsmkpresenter.cpp
index cb038462..45e26828 100644
--- a/LEGO1/mxloopingsmkpresenter.cpp
+++ b/LEGO1/mxloopingsmkpresenter.cpp
@@ -1,5 +1,9 @@
 #include "mxloopingsmkpresenter.h"
 
+#include "decomp.h"
+
+DECOMP_STATIC_ASSERT(sizeof(MxLoopingSmkPresenter) == 1828);
+
 // OFFSET: LEGO1 0x100b48b0
 MxLoopingSmkPresenter::MxLoopingSmkPresenter()
 {
diff --git a/LEGO1/mxloopingsmkpresenter.h b/LEGO1/mxloopingsmkpresenter.h
index 129d98b9..8ca18d20 100644
--- a/LEGO1/mxloopingsmkpresenter.h
+++ b/LEGO1/mxloopingsmkpresenter.h
@@ -3,6 +3,8 @@
 
 #include "mxsmkpresenter.h"
 
+#include "decomp.h"
+
 // VTABLE 0x100dc540
 // SIZE 0x724
 class MxLoopingSmkPresenter : public MxSmkPresenter
@@ -17,9 +19,10 @@ class MxLoopingSmkPresenter : public MxSmkPresenter
     // 0x10101e08
     return "MxLoopingSmkPresenter";
   }
-  
+
 private:
   void Init();
+  undefined4 m_unk720;
 };
 
 #endif // MXLOOPINGSMKPRESENTER_H