diff --git a/docs/esp8266/tutorial/intro.rst b/docs/esp8266/tutorial/intro.rst
index a2c5d1838e78d07ca7ab1eb67ec70babb6062749..50b590f88c25f027cbd314f741fda48504f0073d 100644
--- a/docs/esp8266/tutorial/intro.rst
+++ b/docs/esp8266/tutorial/intro.rst
@@ -74,8 +74,9 @@ PC.  You may also need to reduce the baudrate if you get errors when flashing
 (eg down to 115200).  The filename of the firmware should also match the file
 that you have.
 
-If you have a NodeMCU board, you may need to use the following command to deploy
-the firmware (note the "-fm dio" option)::
+For some boards with a particular FlashROM configuration (e.g. some variants of
+a NodeMCU board) you may need to use the following command to deploy
+the firmware (note the ``-fm dio`` option)::
 
     esptool.py --port /dev/ttyUSB0 --baud 460800 write_flash --flash_size=8m -fm dio 0 esp8266-2016-05-03-v1.8.bin