diff --git a/doc/source/contributor/index.rst b/doc/source/contributor/index.rst
index 5c8483af..f256420e 100644
--- a/doc/source/contributor/index.rst
+++ b/doc/source/contributor/index.rst
@@ -1,6 +1,6 @@
-===========================
- Contributor Documentation
-===========================
+=========================
+Contributor Documentation
+=========================
 
 Contributing to Cybrog gives you the power to help add features, fix bugs,
 enhance documentation, and increase testing. Contributions of any type are
diff --git a/doc/source/user/architecture.rst b/doc/source/user/architecture.rst
index 0e74efa1..d817e5a0 100644
--- a/doc/source/user/architecture.rst
+++ b/doc/source/user/architecture.rst
@@ -1,5 +1,5 @@
 Cyborg architecture
-====================
+===================
 
 Cyborg design can be described by following diagram:
 
diff --git a/doc/source/user/usage.rst b/doc/source/user/usage.rst
index 441a778f..d6527f78 100644
--- a/doc/source/user/usage.rst
+++ b/doc/source/user/usage.rst
@@ -1,6 +1,6 @@
-========
+=====
 Usage
-========
+=====
 
 To use cyborg in a project::