International Migrants Day offers an opportunity to bear witness to migrants’ human rights situation. Today, it is our responsibility to stress the growing tendency in EU to establish “solidarity offences” and the “duty to denounce” undocumented migrants, which hurt both the latter’s access to health care and the professionals working with them, in particular various organisations belonging to the HUMA network*. HUMA asks for the removal of national laws penalising humanitarian assistance to undocumented migrants. Any kind of denunciation or arrest of undocumented migrants seeking access to health care is a crime to human rights.