diff -up ./Makefile.orig ./Makefile
--- ./Makefile.orig	2019-12-01 19:30:26.328409930 +0200
+++ ./Makefile	2019-12-01 19:30:48.760629211 +0200
@@ -1,13 +1,13 @@
 default: basic
 
 basic: jadetex.ltx
-	tex jadetex.ins
+	etex jadetex.ins
 
 jadetex.fmt: basic
-	tex -ini -progname=jadetex "&latex" jadetex.ini
+	etex -ini -progname=jadetex "&latex" jadetex.ini
 
 pdfjadetex.fmt: basic
-	pdftex -ini -progname=pdfjadetex "&pdflatex" pdfjadetex.ini
+	pdfetex -ini -progname=pdfjadetex "&pdflatex" pdfjadetex.ini
 
 install: jadetex.fmt pdfjadetex.fmt
 	(TT=$$DESTDIR/`kpsewhich -expand-var '$$TEXMFMAIN'`; \