diff --git a/package/ntp/ntp.mk b/package/ntp/ntp.mk
index 74cf546988..cc363269c3 100644
--- a/package/ntp/ntp.mk
+++ b/package/ntp/ntp.mk
@@ -24,7 +24,7 @@ NTP_CONF_OPTS = \
 NTP_AUTORECONF = YES
 
 ifeq ($(BR2_PACKAGE_LIBOPENSSL),y)
-NTP_CONF_OPTS += --with-crypto
+NTP_CONF_OPTS += --with-crypto --enable-openssl-random
 NTP_DEPENDENCIES += openssl
 else
 NTP_CONF_OPTS += --without-crypto --disable-openssl-random