diff --git a/README.md b/README.md
index dc57c79f..c51dd907 100644
--- a/README.md
+++ b/README.md
@@ -316,15 +316,15 @@ ninja -C build
 After you've finished building you can follow the instructions under the
 [usage](#Usage) section on how to set up yabridge.
 
-<small>
-  *The versions of GCC and Boost that ship with Ubuntu 18.04 by default are too
+<sub>
+  \*The versions of GCC and Boost that ship with Ubuntu 18.04 by default are too
   old to compile yabridge. If you do wish to build yabridge from scratch rather
   than using the [prebuilt binaries](https://github.com/robbert-vdh/yabridge/actions?query=workflow%3A%22Automated+builds%22+branch%3Amaster),
   then you should take a look at the [docker
   image](https://github.com/robbert-vdh/docker-yabridge/blob/master/bionic/Dockerfile)
   used when building yabridge on Ubuntu 18.04 for on overview of what would need
   to be installed to compile on Ubuntu 18.04.
-</small>
+</sub>
 
 ### 32-bit bitbridge