diff --git a/macros/masm.mac b/macros/masm.mac
index 3e64f70a..6587e015 100644
--- a/macros/masm.mac
+++ b/macros/masm.mac
@@ -77,4 +77,6 @@ USE: masm
 	; Nothing
 %endmacro
 
+%idefine tbyte tword
+
 	default rel