diff --git a/Dev.md b/Dev.md
index d6792f1..16b266b 100644
--- a/Dev.md
+++ b/Dev.md
@@ -16,7 +16,7 @@ Views into the process of Tahoe hackery.
 ## Extensions
 
  * Tahoe has a programmatic API which enables building custom applications on top of the storage infrastructure.
- * The [wapi.txt]source:docs/frontends/wapi.txt document shows how to control a Tahoe node programmatically.
+ * The [docs/frontends/webapi.txt]source:docs/frontends/webapi.txt document shows how to control a Tahoe node programmatically.
  * [The Extension Page](Extensions) lists extension projects and extension development resources.
 
 ## Source Code