diff --git a/src/doc/reference.md b/src/doc/reference.md
index 7c9cca90edda..8bd481810085 100644
--- a/src/doc/reference.md
+++ b/src/doc/reference.md
@@ -1889,8 +1889,8 @@ release builds.
 
 There are two kinds of configuration options, one that is either defined or not
 (`#[cfg(foo)]`), and the other that contains a string that can be checked
-against (`#[cfg(bar = "baz")]` (currently only compiler-defined configuration
-options can have the latter form).
+against (`#[cfg(bar = "baz")]`). Currently, only compiler-defined configuration
+options can have the latter form.
 
 ```
 // The function is only included in the build when compiling for OSX