diff --git a/contrib/less/Makefile.dsm b/contrib/less/Makefile.dsm
deleted file mode 100644
index 5bc52820681d..000000000000
--- a/contrib/less/Makefile.dsm
+++ /dev/null
@@ -1,58 +0,0 @@
-# Makefile for less.
-# MS-DOS version
-
-#### Start of system configuration section. ####
-
-CC = cl
-# Change the following directories to match your installation.
-LIBDIR = c:\msvc\lib
-INCDIR = c:\msvc\include
-
-# CFLAGS are compile-time options and LDFLAGS are link-time options. They are
-# customized for MSVC 1.0 (MSC 8.0). If you have a different version of the
-# compiler, you may need to change some of the options to their equivalents.
-# -Ot     optimize for speed
-# -AL     large memory model
-# -Za     ANSI C conformance
-# -nologo suppress MSVC banners
-# -onerror:noexe   no .EXE file if link errors occur
-CFLAGS = -Ot -AL -Za -nologo
-LDFLAGS = -onerror:noexe -nologo
-LIBS = $(LIBDIR)\llibce.lib $(LIBDIR)\graphics.lib
-
-#### End of system configuration section. ####
-
-# This rule allows us to supply the necessary -D options
-# in addition to whatever the user asks for.
-.c.obj:
-	$(CC) -c -I. -I$(INCDIR) $(CPPFLAGS) $(CFLAGS) $<
-
-OBJ =	main.obj screen.obj brac.obj ch.obj charset.obj cmdbuf.obj command.obj \
-	decode.obj edit.obj filename.obj forwback.obj help.obj ifile.obj \
-	input.obj jump.obj line.obj linenum.obj lsystem.obj \
-	mark.obj optfunc.obj option.obj opttbl.obj os.obj output.obj \
-	position.obj prompt.obj search.obj signal.obj tags.obj \
-	ttyin.obj version.obj
-
-all: less lesskey
-
-# This is really horrible, but the command line is too long for 
-# MS-DOS if we try to link $(OBJ).
-less: $(OBJ)
-	-if exist lesskey.obj del lesskey.obj
-	$(CC) $(LDFLAGS) -o $@ *.obj $(LIBS)
-
-lesskey: lesskey.obj version.obj
-	$(CC) $(LDFLAGS) -o $@ lesskey.obj version.obj $(LIBS)
-
-defines.h: defines.ds
-	-del defines.h
-	-copy defines.ds defines.h
-
-$(OBJ): less.h defines.h
-
-clean:
-	-del *.obj 
-	-del less.exe
-	-del lesskey.exe
-