diff --git a/source/core/board/NstBoardBmcVt5201.cpp b/source/core/board/NstBoardBmcVt5201.cpp
index 684305a..0fb377c 100644
--- a/source/core/board/NstBoardBmcVt5201.cpp
+++ b/source/core/board/NstBoardBmcVt5201.cpp
@@ -117,6 +117,7 @@ namespace Nes
 						case VT5201_54IN1: id = 4; break;
 						case VT5201_55IN1: id = 5; break;
 						case VT5201_65IN1: id = 6; break;
+						case VT5201_XIN1: default: break;
 					}
 
 					return names[id][i];