diff --git a/index.md b/index.md
index 37e28fbb..561c1007 100644
--- a/index.md
+++ b/index.md
@@ -50,7 +50,7 @@ Documentation
 
 - The [User Manual](docs/User-Manual) covers in detail how to use Cyclone, and provides information and API documentation on the Scheme language features implemented by Cyclone.
 
-- There is a [Development Guide](docs/Development.md) with instructions for common tasks when hacking on the compiler itself.
+- There is a [Development Guide](docs/Development) with instructions for common tasks when hacking on the compiler itself.
 
 - Cyclone's [Garbage Collector](docs/Garbage-Collector) is documented at a high-level. This document includes details on extending Cheney on the MTA to support multiple stacks and fusing that approach with a tri-color marking collector.