diff --git a/lib/ncurses/ncurses/Makefile b/lib/ncurses/ncurses/Makefile
index fe68a39dc3c0..94fb03a9b278 100644
--- a/lib/ncurses/ncurses/Makefile
+++ b/lib/ncurses/ncurses/Makefile
@@ -282,6 +282,7 @@ CFLAGS+=	-DFREEBSD_NATIVE -DTERMIOS
 # Installed
 HEADERS=	curses.h term.h termcap.h unctrl.h
 SRCHDRS=	ncurses_dll.h
+CLEANFILES+=	ncurses_dll.h
 
 .if defined(ENABLE_WIDEC)
 INCS=		${HEADERS} ${SRCHDRS}