diff --git a/docs/api/srfi/18.md b/docs/api/srfi/18.md
index a4278119..7882e5f3 100644
--- a/docs/api/srfi/18.md
+++ b/docs/api/srfi/18.md
@@ -27,7 +27,7 @@ See the [Multithreading support SRFI documentation](http://srfi.schemers.org/srf
 - [`condition-variable-wait!`](#condition-variable-wait)
 - [`condition-variable-signal!`](#condition-variable-signal)
 - [`condition-variable-broadcast!`](#condition-variable-broadcast)
-- [`->heap`](#-heap)
+- [`->heap`](#->heap)
 - [`Cyc-minor-gc`](#cyc-minor-gc)
 
 # thread?