diff --git a/util/ack/Makefile b/util/ack/Makefile
index e1dbb3ba..8d655401 100644
--- a/util/ack/Makefile
+++ b/util/ack/Makefile
@@ -8,8 +8,8 @@ OBJ=list.o data.o main.o scan.o svars.o trans.o util.o rmach.o run.o \
 ACKDIR=../../lib/ack
 FE=fe
 INTABLES=pdp int
-LNTABLES=acc apc abc vax2 vax4 i86 ix m68k2 m68k4 pmds z8000 int22 int24 int44\
-6500 6800 6805 6809 i80 ns s2650 z80 
+LNTABLES=acc apc abc vax2 vax4 i86 ix m68k2 m68k4 pmds pmds4 z8000\
+int22 int24 int44 6500 6800 6805 6809 i80 ns s2650 z80 
 CFLAGS=-O -n
 BINDIR=../../bin