diff --git a/doc/source/contributor/cetus_datasource.rst b/doc/source/contributor/cetus_datasource.rst
index 017500046..041f034e5 100644
--- a/doc/source/contributor/cetus_datasource.rst
+++ b/doc/source/contributor/cetus_datasource.rst
@@ -1,5 +1,5 @@
 ================
-Cetus datasource
+Cetus Datasource
 ================
 
 Cetus is a self-developed openstack solution of multi-k8s-clusters on openstack.
diff --git a/doc/source/contributor/configuration.rst b/doc/source/contributor/configuration.rst
index 4c1727a01..1de1b5488 100644
--- a/doc/source/contributor/configuration.rst
+++ b/doc/source/contributor/configuration.rst
@@ -1,5 +1,5 @@
 =====================
-Vitrage configuration
+Vitrage Configuration
 =====================
 
 General
diff --git a/doc/source/contributor/k8s_datasource.rst b/doc/source/contributor/k8s_datasource.rst
index af26c6225..8245aeccf 100644
--- a/doc/source/contributor/k8s_datasource.rst
+++ b/doc/source/contributor/k8s_datasource.rst
@@ -1,5 +1,5 @@
 =====================
-Kubernetes datasource
+Kubernetes Datasource
 =====================
 
 This document describes how to configure kubernetes datasource properly.
diff --git a/doc/source/contributor/profiler-config.rst b/doc/source/contributor/profiler-config.rst
index 327cf6f84..f9ac8bc16 100644
--- a/doc/source/contributor/profiler-config.rst
+++ b/doc/source/contributor/profiler-config.rst
@@ -1,5 +1,5 @@
 ==================
-Configure profiler
+Configure Profiler
 ==================
 
 Overview
diff --git a/doc/source/contributor/prometheus-datasource.rst b/doc/source/contributor/prometheus-datasource.rst
index 0ac6fa73c..aa1d07975 100644
--- a/doc/source/contributor/prometheus-datasource.rst
+++ b/doc/source/contributor/prometheus-datasource.rst
@@ -1,5 +1,5 @@
 =====================
-Prometheus datasource
+Prometheus Datasource
 =====================
 
 This document describes how to configure Prometheus datasource properly.