\makeatletter
\renewcommand{\makehead}{%\@initializecommand
  \setlength{\makeheaddetailswidth}{0.8\textwidth}%
  \hfil%
  \parbox{\makeheaddetailswidth}{%
    \centering%
    % name and title
    \namestyle{\@firstname~\@lastname}%
    \ifthenelse{\equal{\@title}{}}{}{\titlestyle{~|~\@title}}\\% \isundefined doesn't work on \@title, as LaTeX itself defines \@title (before it possibly gets redefined by \title)
    % optional detailed information
    \if@details{%
      \addressfont\color{color2}%
      \ifthenelse{\isundefined{\@addressstreet}}{}{\addtomakeheaddetails{\addresssymbol\@addressstreet}%
        \ifthenelse{\equal{\@addresscity}{}}{}{\addtomakeheaddetails[~--~]{\@addresscity}}% if \addresstreet is defined, \addresscity and \addresscountry will always be defined but could be empty
        \ifthenelse{\equal{\@addresscountry}{}}{}{\addtomakeheaddetails[~--~]{\@addresscountry}}%
        \flushmakeheaddetails\@firstmakeheaddetailselementtrue\par\vspace{-\baselineskip}\null}% <========================
      \collectionloop{phones}{% the key holds the phone type (=symbol command prefix), the item holds the number
        \addtomakeheaddetails{\csname\collectionloopkey phonesymbol\endcsname\collectionloopitem}}%
      \ifthenelse{\isundefined{\@email}}{}{\addtomakeheaddetails{\emailsymbol\emaillink{\@email}}}%
      \ifthenelse{\isundefined{\@homepage}}{}{\addtomakeheaddetails{\homepagesymbol\httplink{\@homepage}}}%
      \collectionloop{socials}{% the key holds the social type (=symbol command prefix), the item holds the link
        \addtomakeheaddetails{\csname\collectionloopkey socialsymbol\endcsname\collectionloopitem}}%
      \ifthenelse{\isundefined{\@extrainfo}}{}{\addtomakeheaddetails{\@extrainfo}}%
    \flushmakeheaddetails}\fi}\\[2.5em]}
\makeatother