diff --git a/LEGO1/legoentitypresenter.cpp b/LEGO1/legoentitypresenter.cpp
index c5057035..f3ac23c5 100644
--- a/LEGO1/legoentitypresenter.cpp
+++ b/LEGO1/legoentitypresenter.cpp
@@ -3,6 +3,8 @@
 #include "legoomni.h"
 #include "legovideomanager.h"
 
+DECOMP_SIZE_ASSERT(LegoEntityPresenter, 0x50);
+
 // OFFSET: LEGO1 0x10053440
 LegoEntityPresenter::LegoEntityPresenter()
 {
diff --git a/LEGO1/legoentitypresenter.h b/LEGO1/legoentitypresenter.h
index 3fde133c..2ee9f701 100644
--- a/LEGO1/legoentitypresenter.h
+++ b/LEGO1/legoentitypresenter.h
@@ -4,6 +4,7 @@
 #include "mxcompositepresenter.h"
 
 // VTABLE 0x100d8398
+// SIZE 0x50
 class LegoEntityPresenter : public MxCompositePresenter {
 public:
 	LegoEntityPresenter();