diff --git a/libs/js/Makefile.in b/libs/js/Makefile.in
index 76ef485614..55e7f2d655 100644
--- a/libs/js/Makefile.in
+++ b/libs/js/Makefile.in
@@ -165,6 +165,8 @@ src/js.o: src/js.c
 src/perlconnect/jsperl.o: src/perlconnect/jsperl.c
 	$(CC) $(CPPFLAGS) $(CLI_CPPFLAGS) $(CFLAGS) $(CLI_CFLAGS) -o $@ -c $<
 
+src/js.c: src/jstypes.h
+src/jstypes.h: src/jsautocfg.h
 $(LIB_OBJS): src/jsautocfg.h
 src/jsautocfg.h: jscpucfg
 	-rm -f $@ src/jsautocfg.h