diff --git a/package/collectd/Config.in b/package/collectd/Config.in
index d44d4e4913..9c38d87bcb 100644
--- a/package/collectd/Config.in
+++ b/package/collectd/Config.in
@@ -384,6 +384,10 @@ config BR2_PACKAGE_COLLECTD_MYSQL
 	  Connects to a MySQL database and issues a "show status"
 	  command.
 
+comment "mysql needs a toolchain w/ C++, threads"
+	depends on BR2_USE_MMU
+	depends on !BR2_INSTALL_LIBSTDCPP || !BR2_TOOLCHAIN_HAS_THREADS
+
 config BR2_PACKAGE_COLLECTD_NETLINK
 	bool "netlink"
 	select BR2_PACKAGE_LIBMNL