diff --git a/config.toml.example b/config.toml.example
index dd322c75932..2aba9445084 100644
--- a/config.toml.example
+++ b/config.toml.example
@@ -306,6 +306,9 @@
 #
 #debug = false
 
+# This will make your build more parallel; it costs a bit of runtime
+# performance perhaps (less inlining) but it's worth it.
+#
 # Number of codegen units to use for each compiler invocation. A value of 0
 # means "the number of cores on this machine", and 1+ is passed through to the
 # compiler.