diff --git a/package/rtty/Config.in b/package/rtty/Config.in
index 198d465713..da5afb8364 100644
--- a/package/rtty/Config.in
+++ b/package/rtty/Config.in
@@ -2,6 +2,7 @@ config BR2_PACKAGE_RTTY
 	bool "rtty"
 	depends on BR2_USE_MMU # fork()
 	select BR2_PACKAGE_LIBEV
+	select BR2_PACKAGE_LIBXCRYPT if BR2_TOOLCHAIN_USES_GLIBC
 	help
 	  Access your device's terminal from anywhere via the web.
 
diff --git a/package/rtty/rtty.mk b/package/rtty/rtty.mk
index 8a40f584de..b2fac14432 100644
--- a/package/rtty/rtty.mk
+++ b/package/rtty/rtty.mk
@@ -10,6 +10,10 @@ RTTY_LICENSE = MIT
 RTTY_LICENSE_FILES = LICENSE
 RTTY_DEPENDENCIES = libev
 
+ifeq ($(BR2_PACKAGE_LIBXCRYPT),y)
+RTTY_DEPENDENCIES += libxcrypt
+endif
+
 ifeq ($(BR2_PACKAGE_MBEDTLS),y)
 RTTY_DEPENDENCIES += mbedtls
 RTTY_CONF_OPTS += \