diff --git a/LEGO1/lego/sources/geom/legobox.cpp b/LEGO1/lego/sources/geom/legobox.cpp
index c9a28505..0a5f2bdb 100644
--- a/LEGO1/lego/sources/geom/legobox.cpp
+++ b/LEGO1/lego/sources/geom/legobox.cpp
@@ -1,7 +1,10 @@
 #include "legobox.h"
 
+#include "decomp.h"
 #include "misc/legoutil.h"
 
+DECOMP_SIZE_ASSERT(LegoBox, 0x18)
+
 // FUNCTION: LEGO1 0x100d3740
 LegoResult LegoBox::Read(LegoStorage* p_storage)
 {
diff --git a/LEGO1/lego/sources/geom/legosphere.cpp b/LEGO1/lego/sources/geom/legosphere.cpp
index 8d05352a..7b916326 100644
--- a/LEGO1/lego/sources/geom/legosphere.cpp
+++ b/LEGO1/lego/sources/geom/legosphere.cpp
@@ -1,7 +1,10 @@
 #include "legosphere.h"
 
+#include "decomp.h"
 #include "misc/legostorage.h"
 
+DECOMP_SIZE_ASSERT(LegoSphere, 0x10)
+
 // FUNCTION: LEGO1 0x100d3770
 LegoResult LegoSphere::Read(LegoStorage* p_storage)
 {
diff --git a/LEGO1/lego/sources/geom/legovertex.cpp b/LEGO1/lego/sources/geom/legovertex.cpp
index 94122bd0..2977d60a 100644
--- a/LEGO1/lego/sources/geom/legovertex.cpp
+++ b/LEGO1/lego/sources/geom/legovertex.cpp
@@ -1,7 +1,10 @@
 #include "legovertex.h"
 
+#include "decomp.h"
 #include "misc/legostorage.h"
 
+DECOMP_SIZE_ASSERT(LegoVertex, 0x0c)
+
 // FUNCTION: LEGO1 0x100d37b0
 LegoVertex::LegoVertex()
 {
diff --git a/LEGO1/lego/sources/roi/legoroi.cpp b/LEGO1/lego/sources/roi/legoroi.cpp
index 822768a1..5656fd02 100644
--- a/LEGO1/lego/sources/roi/legoroi.cpp
+++ b/LEGO1/lego/sources/roi/legoroi.cpp
@@ -175,8 +175,9 @@ LegoResult LegoROI::Read(
 
 	if (m_unk0x100) {
 		for (roiLength = strlen(m_name); roiLength; roiLength--) {
-			if (m_name[roiLength - 1] < '0' || m_name[roiLength - 1] > '9')
+			if (m_name[roiLength - 1] < '0' || m_name[roiLength - 1] > '9') {
 				break;
+			}
 		}
 
 		roiName = new LegoChar[roiLength + 1];