diff --git a/README.md b/README.md
index f7f6ae0..8727e74 100644
--- a/README.md
+++ b/README.md
@@ -3,11 +3,11 @@
 pigpio is a C library for the Raspberry which allows control of the
 General Purpose Input Outputs (GPIO).
 
-At the moment pigpio on the Pi4B is experimental. I am not sure if the DMA channels
+**At the moment pigpio on the Pi4B is experimental. I am not sure if the DMA channels
     being used are safe.  The Pi4B defaults are primary channel 7, secondary channel 6.
     If these channels do not work you will have to experiment. You can set the channels
     used by the pigpio daemon by invoking it with the -d and -e options, e.g. 
-    <small>sudo pigpiod -d 5 -e 8</small> to specify primary 5, secondary 8.
+    <small>sudo pigpiod -d 5 -e 8</small> to specify primary 5, secondary 8.**
 
 ## Features