diff --git a/docs/components/romlib-design.rst b/docs/components/romlib-design.rst
index 9f62b7c..ab39723 100644
--- a/docs/components/romlib-design.rst
+++ b/docs/components/romlib-design.rst
@@ -106,7 +106,7 @@
 In the below example the usage of ROMLIB together with mbed TLS is demonstrated
 to showcase the benefits of library at ROM - it's not mandatory.
 
-::
+.. code:: shell
 
     make PLAT=fvp                                                   \
     MBEDTLS_DIR=</path/to/mbedtls/>                                 \