diff --git a/docs/ARCHITECTURE.rst b/docs/architecture.rst
similarity index 100%
rename from docs/ARCHITECTURE.rst
rename to docs/architecture.rst
diff --git a/docs/ENVIRONMENT.rst b/docs/environment.rst
similarity index 100%
rename from docs/ENVIRONMENT.rst
rename to docs/environment.rst
diff --git a/docs/index.rst b/docs/index.rst
index 3d73e18..d3c3de3 100644
--- a/docs/index.rst
+++ b/docs/index.rst
@@ -52,11 +52,11 @@ Documentation
    features
    changelog
    HOWTO
-   ENVIRONMENT
-   PROTOCOL
-   PEER_DISCOVERY
+   environment
+   protocol
+   peer_discovery
    rpc-interface
-   ARCHITECTURE
+   architecture
    authors
 
 Indices and tables
diff --git a/docs/PEER_DISCOVERY.rst b/docs/peer_discovery.rst
similarity index 100%
rename from docs/PEER_DISCOVERY.rst
rename to docs/peer_discovery.rst
diff --git a/docs/PROTOCOL.rst b/docs/protocol.rst
similarity index 100%
rename from docs/PROTOCOL.rst
rename to docs/protocol.rst