diff --git a/Makefile.conf.in b/Makefile.conf.in
index 54b2256..de6e0ca 100644
--- a/Makefile.conf.in
+++ b/Makefile.conf.in
@@ -9,6 +9,7 @@ prefix=@prefix@
 exec_prefix=@exec_prefix@
 includedir=@includedir@
 bindir=@bindir@
+sbindir=@sbindir@
 libdir=@libdir@
 mandir=@mandir@
 c_opts=@CFLAGS@
@@ -24,6 +25,8 @@ INCLUDE=-I/usr/local/include -I$(TOPDIR)/include
 COPTS = $(c_opts)
 COPTS += -Wall -Wstrict-prototypes -fomit-frame-pointer -pipe
 LINKER=ld
+FLEX=@LEX@
+BISON=@YACC@
 SNDLIB=-lasound
 NCURSESINC="<ncurses.h>"
 NCURSESLIB=-lncurses