diff --git a/bootstrap.fs b/bootstrap.fs
index 11d0dd7..1150965 100644
--- a/bootstrap.fs
+++ b/bootstrap.fs
@@ -1492,6 +1492,9 @@ do-stack 16 cells + do-sp !
 
 : cell% ( -- align size ) cell cell ;
 : char% ( -- align size ) 1 1 ;
+: byte% cell% ;
+: ptr% cell% ;
+: int% cell% ;
 
 \ allocate user memory
 : %allot ( align size -- addr )