diff --git a/package/erlang-p1-acme/Config.in b/package/erlang-p1-acme/Config.in
index 2cd1985a4b..2c0d1d0337 100644
--- a/package/erlang-p1-acme/Config.in
+++ b/package/erlang-p1-acme/Config.in
@@ -1,5 +1,6 @@
 config BR2_PACKAGE_ERLANG_P1_ACME
 	bool "erlang-p1-acme"
+	depends on BR2_INSTALL_LIBSTDCPP # erlang-jiffy
 	select BR2_PACKAGE_ERLANG_IDNA
 	select BR2_PACKAGE_ERLANG_JIFFY
 	select BR2_PACKAGE_ERLANG_JOSE
@@ -8,3 +9,6 @@ config BR2_PACKAGE_ERLANG_P1_ACME
 	  ACME client library for Erlang.
 
 	  https://github.com/processone/p1_acme
+
+comment "erlang-p1-acme needs a toolchain w/ C++"
+	depends on !BR2_INSTALL_LIBSTDCPP