# An issue with defining enumerate items: letters are converted to digits [duplicate]

It was difficult for me to find the proper title for the issue that I'm facing. I would like to define a list of cases like:

Case 1:
Case 2:
.....


For that, I did the following:

\begin{enumerate}[Case 1:]
\item Energy value
\item Optimizer
\end{enumerate}


When I compile it, I get the following:

C1se 1: Energy value
C1se 2: Optimizer


The letter a in the word Case has changed to 1 which I don't know why !!

I even tried the word Scenario, and I get it like Scen1r1o

Do you have any idea how to solve this issue?

• Just guessing: try \begin{enumerate}[{Case} 1:]. If it doesn't work, please post a compilable example. Jul 1 '19 at 13:39
• please always provide an example document, you are using (without saying) the enumerate package syntax and that requires [{Case }1:] here. Jul 1 '19 at 13:40

The issue can be solved by changing the line \begin{enumerate}[Case 1:] to \begin{enumerate}[{Case} 1:] and the same with the word Scenario