diff --git a/src/Make_manx.mak b/src/Make_manx.mak
index b7c06e9..bef1c0b 100644
--- a/src/Make_manx.mak
+++ b/src/Make_manx.mak
@@ -48,6 +48,7 @@
 	fileio.c \
 	fold.c \
 	getchar.c \
+	hashtable.c \
 	main.c \
 	mark.c \
 	memfile.c \
@@ -90,6 +91,7 @@
 	obj/fileio.o \
 	obj/fold.o \
 	obj/getchar.o \
+	obj/hashtable.o \
 	obj/main.o \
 	obj/mark.o \
 	obj/memfile.o \
@@ -130,6 +132,7 @@
 	proto/fileio.pro \
 	proto/fold.pro \
 	proto/getchar.pro \
+	proto/hashtable.pro \
 	proto/main.pro \
 	proto/mark.pro \
 	proto/memfile.pro \
@@ -243,6 +246,9 @@
 obj/getchar.o:	getchar.c
 	$(CCSYM) $@ getchar.c
 
+obj/hashtable.o:	hashtable.c
+	$(CCSYM) $@ hashtable.c
+
 # Don't use $(SYMS) here, because main.c defines EXTERN
 obj/main.o:	main.c option.h globals.h
 	$(CCNOSYM) $@ main.c