diff --git a/package/uacme/Config.in b/package/uacme/Config.in
index 58b7c534e7..d693436115 100644
--- a/package/uacme/Config.in
+++ b/package/uacme/Config.in
@@ -19,6 +19,7 @@ if BR2_PACKAGE_UACME
 config BR2_PACKAGE_UACME_UALPN
 	bool "enable ualpn"
 	depends on BR2_TOOLCHAIN_HAS_THREADS
+	depends on BR2_PACKAGE_OPENSSL || BR2_PACKAGE_GNUTLS
 	select BR2_PACKAGE_LIBEV
 	help
 	  Build and install ualpn, the transparent proxying tls-alpn-01
@@ -27,4 +28,7 @@ config BR2_PACKAGE_UACME_UALPN
 comment "ualpn needs a toolchain w/ threads"
 	depends on !BR2_TOOLCHAIN_HAS_THREADS
 
+comment "ualpn needs either OpenSSL or GnuTLS"
+	depends on !(BR2_PACKAGE_OPENSSL || BR2_PACKAGE_GNUTLS)
+
 endif
diff --git a/package/uacme/uacme.mk b/package/uacme/uacme.mk
index 7e544fce79..be2aa60811 100644
--- a/package/uacme/uacme.mk
+++ b/package/uacme/uacme.mk
@@ -18,12 +18,12 @@ UACME_CONF_ENV = ac_cv_prog_cc_c99='-std=gnu99'
 ifeq ($(BR2_PACKAGE_GNUTLS),y)
 UACME_CONF_OPTS += --with-gnutls
 UACME_DEPENDENCIES += gnutls
-else ifeq ($(BR2_PACKAGE_MBEDTLS),y)
-UACME_CONF_OPTS += --with-mbedtls
-UACME_DEPENDENCIES += mbedtls
 else ifeq ($(BR2_PACKAGE_OPENSSL),y)
 UACME_CONF_OPTS += --with-openssl
 UACME_DEPENDENCIES += openssl
+else ifeq ($(BR2_PACKAGE_MBEDTLS),y)
+UACME_CONF_OPTS += --with-mbedtls
+UACME_DEPENDENCIES += mbedtls
 endif
 
 ifeq ($(BR2_PACKAGE_UACME_UALPN),y)