diff --git a/docs/environment.rst b/docs/environment.rst
index f569d5e6a4..f8144407ef 100644
--- a/docs/environment.rst
+++ b/docs/environment.rst
@@ -75,7 +75,7 @@ CIRCUITPY_WEB_API_PORT
 TCP port number used for the web HTTP API. Defaults to 80 when omitted.
 
 CIRCUITPY_WEB_INSTANCE_NAME
-~~~~~~~~~~~~~~~~~~~
+~~~~~~~~~~~~~~~~~~~~~~~~~~~
 Name the board advertises as for the WEB workflow. Defaults to human readable board name if omitted.
 
 CIRCUITPY_WIFI_PASSWORD