As a lawyer in Belgrade he was a member of a masonic lodge Pobratimstvo where he was acquainted with Luka Ćelović and Milorad Gođevac who already kept touch with Serbs in Macedonia, especially those acting within VMRO.
After the Young Turk revolution in 1908 when affairs in Macedonia seemed to be going towards a political solution, Jovanović took part in the First Conference of Serbs of Old Serbia and Macedonia (12-15 August 1908) in Skopje [REF].