diff --git a/components/panasonic_heatpump/README.md b/components/panasonic_heatpump/README.md
index 8b49cee..f74c5f8 100644
--- a/components/panasonic_heatpump/README.md
+++ b/components/panasonic_heatpump/README.md
@@ -596,7 +596,7 @@ text_sensor:
 
 When the ESP controller is connected initially to the heatpump (and the heatpump is powered),  
 the heatpump may not respond to any request messages.  
-If the CZ-TAW1 is also connected to the ESP controller you will probably see some requests like 31 05 10 01 ...  
+If the CZ-TAW1 is also connected to the ESP controller you will probably see some requests like 0x31 05 10 01 ...  
 These are initial request messages.  
 If the heatpump is not responding, it may help to turn off and on the power of the heatpump (switching the heatpump off is not enough).  
 After a power on the heatpump should respond to the requests.