Itemize: Identation is different between first and second line

I have this problem where it seems that itemize starts with a blank space, whereas the next line starts without it. Is there a way to have both the first and second line aligned? I am using LyX.

This is a minimal code with the behaviour:

documentclass{beamer}
usepackage[bibstyle=authoryear]{biblatex}
begin{document} 
begin{frame}{Test} 
begin{itemize} 
item Test Test Test asdjakhsdahsdk aklsdjklajsd akljsakljd tehlasdklhasd asdhkadha asdhasdha asdhashdasd  
end{itemize} 
end{frame} 
end{document}