diff --git a/lib/ncurses/ncurses/Makefile b/lib/ncurses/ncurses/Makefile
index 2a2150610606..c069233eb3ed 100644
--- a/lib/ncurses/ncurses/Makefile
+++ b/lib/ncurses/ncurses/Makefile
@@ -345,7 +345,7 @@ names.c: MKnames.awk
 codes.c: MKcodes.awk
 	${AWK} -f ${NCURSES_DIR}/ncurses/tinfo/MKcodes.awk bigstrings=${USE_BIG_STRINGS} ${NCURSES_DIR}/include/Caps > codes.c
 
-lib_gen.c: MKlib_gen.sh curses.h
+lib_gen.c: MKlib_gen.sh curses.h ncurses_dll.h
 	LC_ALL=C sh ${NCURSES_DIR}/ncurses/base/MKlib_gen.sh "${CPP:N${CCACHE_BIN}} ${CPPFLAGS}" \
 	    "${AWK}" generated < curses.h >$@