diff --git a/secure/ssh.mk b/secure/ssh.mk
index 8411fb11fb16..f522e1a927fc 100644
--- a/secure/ssh.mk
+++ b/secure/ssh.mk
@@ -1,26 +1,28 @@
 # Common Make variables for OpenSSH
 
 .include <src.opts.mk>
 
 SSHDIR=		${SRCTOP}/crypto/openssh
 
 CFLAGS+= -I${SSHDIR} -include ssh_namespace.h
 
 .if ${MK_GSSAPI} != "no" && ${MK_KERBEROS_SUPPORT} != "no"
 CFLAGS+= -include krb5_config.h
 .endif
 
 CFLAGS+= -DXAUTH_PATH=\"${LOCALBASE:U/usr/local}/bin/xauth\"
 
 .if ${MK_LDNS} != "no"
 CFLAGS+= -DHAVE_LDNS=1
 .endif
 
 .if ${MK_TCP_WRAPPERS} != "no"
 CFLAGS+= -DLIBWRAP=1
 .endif
 
 .if ${MK_USB} != "no"
 # Built-in security key support
 CFLAGS+= -include sk_config.h
 .endif
+
+CFLAGS+= -DOPENSSL_API_COMPAT=0x10100000L