diff --git a/README.md b/README.md
index 143e026..74ec19e 100644
--- a/README.md
+++ b/README.md
@@ -134,7 +134,7 @@ Notes:
   a blank cd and boot it up, skipping steps 7 and 8.
 
 * To include the battery validation patch or to make a build that
-  reverts any EC changes, read the docs/CONFIG.txt and follow
+  reverts any EC changes, read the [CONFIG doc](docs/CONFIG.md) and follow
   the configuration instructions in it before running step 6.
 
 
diff --git a/docs/CONFIG.txt b/docs/CONFIG.md
similarity index 100%
rename from docs/CONFIG.txt
rename to docs/CONFIG.md
diff --git a/docs/index.txt b/docs/index.txt
index 4966000..e4208c0 100644
--- a/docs/index.txt
+++ b/docs/index.txt
@@ -1,7 +1,7 @@
 A collection of the information discovered about the embedded controllers
 used in the thinkpad laptops.
 
-CONFIG.txt
+CONFIG.md
     -   Steps to configure the optional parts of the patching
 
 HACKING.txt