I get dashes instead of bullets in \itemize

When I use \begin{itemize} ... \end{itemize}, the items are displayed as dashes.
But I want them to be displayed by bullets.
Those are my headers:

\documentclass[11pt]{llncs}
\usepackage{amsfonts}
\usepackage{amssymb}
\usepackage{dsfont}
\usepackage{multicol}
\usepackage{fixltx2e}
\usepackage[T1]{fontenc}
\usepackage{comment} 
\usepackage{amsmath}                                
\usepackage[margin=1in]{geometry}
\usepackage[algosection, boxruled, linesnumbered]{algorithm2e}
\usepackage{xcolor}
\usepackage{setspace}
\usepackage{hyperref}
\definecolor{bl}{rgb}{0.0,0.2,0.6} 
\definecolor{dark-red}{rgb}{0.4,0.15,0.15}
\definecolor{dark-blue}{rgb}{0.15,0.15,0.4}
\definecolor{medium-blue}{rgb}{0,0,0.5}
\usepackage{sectsty}
\hypersetup{
    colorlinks, linkcolor={dark-red},
    citecolor={dark-blue}, urlcolor={medium-blue}
}
\usepackage{graphicx}
\usepackage[compact]{titlesec}
\newtheorem{observation}{\textsc{Observation}}
\begin{document}
\begin{itemize}
\item Item 1
\item Item 2
\item Item 3
\end{itemize}
\end{document}

As far as I’ve read, the french options makes this. But I have french nowhere. What could cause this?

Solutions Collecting From Web of "I get dashes instead of bullets in \itemize"

This is the default behaviour of llncs.cls as it sets

\renewcommand\labelitemi{\normalfont\bfseries --}
\renewcommand\labelitemii{$\m@th\bullet$}

meaning first-level itemize items will be set with dashes, while second-level items will be set with bullets. You can adjust this by adding to your preamble

\let\labelitemi\labelitemii

However, consider that for journal submissions, these things should not be altered.

As a showcase of this behaviour, here’s a minimal example:

enter image description here

\documentclass{llncs}% ftp://ftp.springer.de/pub/tex/latex/llncs/latex2e/llncs2e.zip

\begin{document}

\begin{itemize}
  \item Like this,
  \item and like this.
\end{itemize}

\let\labelitemi\labelitemii

\begin{itemize}
  \item Like this,
  \item and like this.
\end{itemize}

\end{document}