diff --git a/package/msgpack/Config.in b/package/msgpack/Config.in
index b380c58f0..a57a3784e 100644
--- a/package/msgpack/Config.in
+++ b/package/msgpack/Config.in
@@ -1,7 +1,7 @@
 config BR2_PACKAGE_MSGPACK
 	bool "msgpack"
 	depends on BR2_INSTALL_LIBSTDCPP
-	depends on !BR2_arc # atomic builtins
+	depends on BR2_ARCH_HAS_ATOMICS
 	help
 	  MessagePack is an efficient binary serialization format.
 
@@ -11,5 +11,5 @@ config BR2_PACKAGE_MSGPACK
 	  http://msgpack.org/
 
 comment "msgpack needs a toolchain w/ C++"
+	depends on BR2_ARCH_HAS_ATOMICS
 	depends on !BR2_INSTALL_LIBSTDCPP
-	depends on !BR2_arc
diff --git a/package/python-msgpack/Config.in b/package/python-msgpack/Config.in
index c4b68a340..ed0b43255 100644
--- a/package/python-msgpack/Config.in
+++ b/package/python-msgpack/Config.in
@@ -3,7 +3,7 @@ config BR2_PACKAGE_PYTHON_MSGPACK
 	depends on BR2_PACKAGE_PYTHON
 	select BR2_PACKAGE_MSGPACK
 	depends on BR2_INSTALL_LIBSTDCPP # msgpack
-	depends on !BR2_arc # msgpack - atomic builtins
+	depends on BR2_ARCH_HAS_ATOMICS # msgpack
 	help
 	  MessagePack (http://msgpack.org/) is a fast, compact binary
 	  serialization format, suitable for similar data to JSON.
@@ -13,6 +13,6 @@ config BR2_PACKAGE_PYTHON_MSGPACK
 	  https://pypi.python.org/pypi/msgpack-python/
 
 comment "python-msgpack needs a toolchain w/ C++"
+	depends on BR2_ARCH_HAS_ATOMICS
 	depends on BR2_PACKAGE_PYTHON
 	depends on !BR2_INSTALL_LIBSTDCPP
-	depends on !BR2_arc