diff --git a/include/c64/types.h b/include/c64/types.h
index 436d07c..ad7f8e7 100644
--- a/include/c64/types.h
+++ b/include/c64/types.h
@@ -2,7 +2,7 @@
 #define C64_TYPES_H
 
 typedef unsigned char	byte;
-typedef unsigned short	word;
+typedef unsigned int	word;
 typedef unsigned long	dword;
 
 typedef signed char	sbyte;