diff --git a/package/openntpd/Config.in b/package/openntpd/Config.in
index 1b856c03b8..c84d0ba25b 100644
--- a/package/openntpd/Config.in
+++ b/package/openntpd/Config.in
@@ -9,6 +9,9 @@ config BR2_PACKAGE_OPENNTPD
 	  to remote NTP servers and can act as NTP server itself,
 	  redistributing the local clock. It just works.
 
+	  Crypto support is available if the LibreSSL library is
+	  enabled.
+
 	  http://www.openntpd.org/
 
 comment "openntpd needs a toolchain w/ NPTL"
diff --git a/package/openntpd/openntpd.mk b/package/openntpd/openntpd.mk
index 96d3881d21..f5a5690479 100644
--- a/package/openntpd/openntpd.mk
+++ b/package/openntpd/openntpd.mk
@@ -11,6 +11,12 @@ OPENNTPD_LICENSE_FILES = COPYING
 # Need to autoreconf for our libtool patch to apply properly
 OPENNTPD_AUTORECONF = YES
 
+# Openntpd searches for tls_config_set_ca_mem which is only available
+# in LibreSSL
+ifeq ($(BR2_PACKAGE_LIBRESSL),y)
+OPENNTPD_DEPENDENCIES += openssl
+endif
+
 # openntpd uses pthread functions for arc4random emulation but forgets
 # to use -pthread
 OPENNTPD_CONF_ENV += CFLAGS="$(TARGET_CFLAGS) -pthread"