diff --git a/CONFIG/AboutDlg.cpp b/CONFIG/AboutDlg.cpp
index 16b1aab2..f07667e5 100644
--- a/CONFIG/AboutDlg.cpp
+++ b/CONFIG/AboutDlg.cpp
@@ -2,6 +2,7 @@
 
 #include "decomp.h"
 
+DECOMP_SIZE_ASSERT(CDialog, 0x60)
 DECOMP_SIZE_ASSERT(CAboutDialog, 0x60)
 
 // FUNCTION: CONFIG 0x00403c20
diff --git a/CONFIG/ConfigCommandLineInfo.cpp b/CONFIG/ConfigCommandLineInfo.cpp
index f0cacd11..0e376e6d 100644
--- a/CONFIG/ConfigCommandLineInfo.cpp
+++ b/CONFIG/ConfigCommandLineInfo.cpp
@@ -2,6 +2,7 @@
 
 #include "decomp.h"
 
+DECOMP_SIZE_ASSERT(CCommandLineInfo, 0x24)
 DECOMP_SIZE_ASSERT(CConfigCommandLineInfo, 0x24)
 
 // FUNCTION: CONFIG 0x00403b10
diff --git a/CONFIG/MainDlg.cpp b/CONFIG/MainDlg.cpp
index dd62eda3..17509d0f 100644
--- a/CONFIG/MainDlg.cpp
+++ b/CONFIG/MainDlg.cpp
@@ -6,6 +6,7 @@
 
 #include <mxdirectx/mxdirect3d.h>
 
+DECOMP_SIZE_ASSERT(CDialog, 0x60)
 DECOMP_SIZE_ASSERT(CMainDialog, 0x70)
 
 // FUNCTION: CONFIG 0x00403d50
diff --git a/CONFIG/config.cpp b/CONFIG/config.cpp
index ccc01522..cd1f86fc 100644
--- a/CONFIG/config.cpp
+++ b/CONFIG/config.cpp
@@ -9,7 +9,7 @@
 #include <process.h> // _spawnl
 
 DECOMP_SIZE_ASSERT(CWinApp, 0xc4)
-DECOMP_SIZE_ASSERT(CConfigApp, 0x10c)
+DECOMP_SIZE_ASSERT(CConfigApp, 0x108)
 
 DECOMP_STATIC_ASSERT(offsetof(CConfigApp, m_display_bit_depth) ==  0xd0)
 
diff --git a/CONFIG/config.h b/CONFIG/config.h
index 76bdfca5..06e3e1ac 100644
--- a/CONFIG/config.h
+++ b/CONFIG/config.h
@@ -13,7 +13,7 @@ struct MxDriver;
 
 #define currentConfigApp ((CConfigApp*) afxCurrentWinApp)
 
-// SIZE 0x10c
+// SIZE 0x108
 class CConfigApp : public CWinApp {
 public:
 	CConfigApp();
@@ -58,7 +58,7 @@ class CConfigApp : public CWinApp {
 public:
 	MxDeviceEnumerate* m_device_enumerator; // 0x0c4
 	MxDriver* m_driver;                     // 0x0c8
-    MxDevice* m_device;                     // 0x0cc
+	MxDevice* m_device;                     // 0x0cc
 	int m_display_bit_depth;                // 0x0d0
 	BOOL m_flip_surfaces;                   // 0x0d4
 	BOOL m_full_screen;                     // 0x0d8
@@ -73,7 +73,6 @@ class CConfigApp : public CWinApp {
 	int m_texture_quality;                  // 0x0fc
 	undefined m_unk0x100[4];                // 0x100
 	BOOL m_music;                           // 0x104
-    undefined m_unk[4];
 };
 
 #endif // !defined(AFX_CONFIG_H)