diff --git a/LEGO1/compat.h b/LEGO1/compat.h
index 6248259b..c682dc0e 100644
--- a/LEGO1/compat.h
+++ b/LEGO1/compat.h
@@ -11,6 +11,9 @@
 #define COMPAT_CONST
 #endif
 
+// DIsable "nonstandard extension used : 'bool'" warning spam
+#pragma warning( disable : 4237 )
+
 #define MSVC420_VERSION 1020
 
 // STL compatibility.