diff --git a/lib/libcrypt/Makefile b/lib/libcrypt/Makefile
index 5a9eac4c682f..e939bae1bc25 100644
--- a/lib/libcrypt/Makefile
+++ b/lib/libcrypt/Makefile
@@ -1,6 +1,3 @@
-#
-#
-
 SHLIBDIR?=	/lib
 
 .include <src.opts.mk>
@@ -18,7 +15,8 @@ SRCS=		crypt.c misc.c \
 MAN=		crypt.3
 MLINKS=		crypt.3 crypt_get_format.3 crypt.3 crypt_r.3 \
 		crypt.3 crypt_set_format.3
-CFLAGS+=	-I${SRCTOP}/lib/libmd
+CFLAGS+=	-I${SRCTOP}/lib/libmd \
+		-I${SRCTOP}/sys/crypto/sha2
 
 # Pull in the strong crypto, if it is present.
 .if exists(${SRCTOP}/secure/lib/libcrypt) && ${MK_CRYPT} != "no"