diff --git a/8086/msdos/Makefile b/8086/msdos/Makefile
index 2c28424..b62a786 100644
--- a/8086/msdos/Makefile
+++ b/8086/msdos/Makefile
@@ -1,7 +1,4 @@
 
-fbfiles = $(wildcard src/*.fb tests/*.fb)
-fthfiles = $(patsubst %.fb, %.fth, $(fbfiles))
-
 srcfbfiles = $(wildcard src/*.fb)
 srcfbtxtfiles = $(patsubst src/%.fb, src/%.fb.txt, $(srcfbfiles))
 testsfbfiles = $(wildcard tests/*.fb)
@@ -11,8 +8,6 @@ fb_txt_files = $(srcfbtxtfiles) $(testsfbtxtfiles)
 test: incltest.result logtest.result test-std.result test-blk.result \
     incltest-volks4th.result test-volks4th-min.result test-stdi.result
 
-fth: $(fthfiles)
-
 fb.txt: $(fb_txt_files)
 
 clean:
@@ -245,17 +240,6 @@ dosfiles:
 
 $(srcfbtxtfiles): src/%.fb.txt: src/%.fb ../../tools/fb2fth.py
 	../../tools/fb2fth.py $< $@
-	mv $(patsubst %.fb, %.fth, $<) $(patsubst %.fb, %.fth.txt, $<) 
-	diff $(patsubst %.fb, %.fth.txt, $<) $(patsubst %.fb, %.fb.txt, $<) 
 
 $(testsfbtxtfiles): tests/%.fb.txt: tests/%.fb ../../tools/fb2fth.py
 	../../tools/fb2fth.py $< $@
-	mv $(patsubst %.fb, %.fth, $<) $(patsubst %.fb, %.fth.txt, $<) 
-	diff $(patsubst %.fb, %.fth.txt, $<) $(patsubst %.fb, %.fb.txt, $<) 
-
-
-src/%.fth: src/%.fb ../../tools/fb2fth.py
-	../../tools/fb2fth.py $< $@
-
-tests/%.fth: tests/%.fb ../../tools/fb2fth.py
-	../../tools/fb2fth.py $< $@