diff --git a/HowToUbuntu.md b/HowToUbuntu.md
index 2b64051..e9fdffc 100644
--- a/HowToUbuntu.md
+++ b/HowToUbuntu.md
@@ -26,7 +26,7 @@ After a few seconds, you will receive an SMS on the cell phone with phone number
 > 25 Feb. 2017 10:52
 
 2. Verify your phone number
-Enter `./signal-cli -u +4915151111111 verify 123-456` on the command line. Again, no reply if all is fine.
+Enter `./signal-cli -u +4915151111111 verify **123-456**` on the command line. Again, no reply if all is fine.
 
 ## Send a first message from the command line
 We assume that the receiver of the message has the phone number +4915152222222. Enter `./signal-cli -u +4915151111111 send -m "My first message from the CLI" +4915152222222` on the command line. Again, no reply if all is fine.