diff --git a/LEGO1/legophonemepresenter.cpp b/LEGO1/legophonemepresenter.cpp
index b8bfa2d1..ca8fba78 100644
--- a/LEGO1/legophonemepresenter.cpp
+++ b/LEGO1/legophonemepresenter.cpp
@@ -1,5 +1,7 @@
 #include "legophonemepresenter.h"
 
+DECOMP_SIZE_ASSERT(LegoPhonemePresenter, 0x88);
+
 // OFFSET: LEGO1 0x1004e180
 LegoPhonemePresenter::LegoPhonemePresenter()
 {