diff --git a/security/openssl_tpm_engine/Makefile b/security/openssl_tpm_engine/Makefile
index cd9714a5239f..5e859cee3e7b 100644
--- a/security/openssl_tpm_engine/Makefile
+++ b/security/openssl_tpm_engine/Makefile
@@ -19,7 +19,7 @@ USES=		gmake libtool
 USE_AUTOTOOLS=	autoconf
 USE_LDCONFIG=	yes
 GNU_CONFIGURE=	yes
-LDFLAGS+=	-L${LOCALBASE}/lib
+LDFLAGS+=	-L${LOCALBASE}/lib -lcrypto
 CFLAGS+=	-I${LOCALBASE}/include
 SUB_FILES=	pkg-message
 PORTEXAMPLES=	openssl.cnf.sample