Long comments SP update Error

When I update a Stored routine (stored procedure) on a MySql database, I put in the comment a "long" comment, the application bugs:

My comment was like this: "Gets all the eLetters from the last month contained under a given root umbraco node"

Result:
[Window Title]-Unnamed: Error
[Content]-SQL Error (1607): Cannot create stored routine `HeidiSQL_temproutine_1`. Check warnings
[OK]
[Footer]-Find some help on this error

version 9.3.0.4984