diff --git a/build/tools/MasterEditorTWL/MasterEditorTWL.ncb b/build/tools/MasterEditorTWL/MasterEditorTWL.ncb
index 6e0b044a..e3514c1a 100644
Binary files a/build/tools/MasterEditorTWL/MasterEditorTWL.ncb and b/build/tools/MasterEditorTWL/MasterEditorTWL.ncb differ
diff --git a/build/tools/MasterEditorTWL/MasterEditorTWL.suo b/build/tools/MasterEditorTWL/MasterEditorTWL.suo
index 9bc3e9d3..c12e0f68 100644
Binary files a/build/tools/MasterEditorTWL/MasterEditorTWL.suo and b/build/tools/MasterEditorTWL/MasterEditorTWL.suo differ
diff --git a/build/tools/MasterEditorTWL/MasterEditorTWL/Debug/BuildLog.htm b/build/tools/MasterEditorTWL/MasterEditorTWL/Debug/BuildLog.htm
index 770f3141..aea69628 100644
Binary files a/build/tools/MasterEditorTWL/MasterEditorTWL/Debug/BuildLog.htm and b/build/tools/MasterEditorTWL/MasterEditorTWL/Debug/BuildLog.htm differ
diff --git a/build/tools/MasterEditorTWL/MasterEditorTWL/srl.cpp b/build/tools/MasterEditorTWL/MasterEditorTWL/srl.cpp
index 0f157311..5ea01408 100644
--- a/build/tools/MasterEditorTWL/MasterEditorTWL/srl.cpp
+++ b/build/tools/MasterEditorTWL/MasterEditorTWL/srl.cpp
@@ -950,7 +950,7 @@ ECSrlResult RCSrl::mrcNTR( FILE *fp )
 	for( i=0; i < GAME_CODE_MAX; i++ )
 	{
 		char c = this->pRomHeader->s.game_code[i];
-		if( (c < 0x20) || (0x5f < c) )
+		if( (c < 0x20) || (0x5f < c) )		// 00hを許さない
 		{
 			result = false;
 		}
@@ -972,7 +972,7 @@ ECSrlResult RCSrl::mrcNTR( FILE *fp )
 	for( i=0; i < MAKER_CODE_MAX; i++ )
 	{
 		char c = this->pRomHeader->s.maker_code[i];
-		if( ((c < 0x20) || (0x5f < c)) && (c != 0x00) )
+		if( (c < 0x20) || (0x5f < c) )
 		{
 			result = false;
 		}