diff --git a/supported-boards/96b-Avenger.rst b/supported-boards/96b-Avenger.rst
index a6042dfaff1ab7d966db06b940bb179ae2a79ee3..01159dc6a8092c75687f828c7a40acecc33d2abc 100644
--- a/supported-boards/96b-Avenger.rst
+++ b/supported-boards/96b-Avenger.rst
@@ -17,7 +17,7 @@ processors and the microcontroller, Avenger96 can simultaneously run Linux and Z
 powering up and programming the microcontroller with the appropriate image. Linux provides interfaces to communicate with the program running on the microcontroller.
 
 Hardware
-========
+********
 
 * For detailed specification, see `Avenger96 product page on the 96Boards website <https://www.96boards.org/product/avenger96/>`__.
 
diff --git a/supported-boards/96b-nitrogen.rst b/supported-boards/96b-nitrogen.rst
index 16dda6968fa289f466472dd3f79ccff5739cd412..977fa71ef9701ac2acc08b57e8abdc50760f84fc 100644
--- a/supported-boards/96b-nitrogen.rst
+++ b/supported-boards/96b-nitrogen.rst
@@ -8,6 +8,9 @@
 .. contents:: 
    :depth: 3
 
+Overview
+********
+
 Nitrogen, a compliant IoT Edition board provides economical and compact BLE solutions for various IoT projects. This board includes the below features:
 
 * Nordic nRF52832 microcontroller