diff --git a/sys/modules/crypto/Makefile b/sys/modules/crypto/Makefile
index 891f7e47347..be801db598d 100644
--- a/sys/modules/crypto/Makefile
+++ b/sys/modules/crypto/Makefile
@@ -16,6 +16,6 @@ SRCS	+= skipjack.c bf_enc.c bf_skey.c
 SRCS	+= des_ecb.c des_enc.c des_setkey.c
 SRCS	+= sha1.c sha2.c
 SRCS	+= opt_param.h cryptodev_if.h bus_if.h device_if.h
-SRCS	+= opt_ddb.h
+SRCS	+= opt_ddb.h opt_kdtrace.h
 SRCS	+= camellia.c camellia-api.c
 .include <bsd.kmod.mk>