diff --git a/source/framework/tools/inc/TRestSystemOfUnits.h b/source/framework/tools/inc/TRestSystemOfUnits.h
index c8ebed05e..682413d0f 100644
--- a/source/framework/tools/inc/TRestSystemOfUnits.h
+++ b/source/framework/tools/inc/TRestSystemOfUnits.h
@@ -151,6 +151,8 @@ AddUnit(radians, REST_Units::Angle, 1.);
 AddUnit(deg, REST_Units::Angle, TMath::RadToDeg());
 AddUnit(degree, REST_Units::Angle, TMath::RadToDeg());
 AddUnit(degrees, REST_Units::Angle, TMath::RadToDeg());
+AddUnit(arcmin, REST_Units::Angle, TMath::RadToDeg() * 60.);
+AddUnit(arcsec, REST_Units::Angle, TMath::RadToDeg() * 3600.);
 }  // namespace REST_Units
 
 typedef REST_Units::TRestSystemOfUnits units;