diff --git a/agnpy/compton/external_compton.py b/agnpy/compton/external_compton.py
index d42aa71..692c24e 100644
--- a/agnpy/compton/external_compton.py
+++ b/agnpy/compton/external_compton.py
@@ -9,7 +9,7 @@
 )
 from ..utils.conversion import nu_to_epsilon_prime, to_R_g_units
 from ..utils.geometry import x_re_shell, mu_star_shell, x_re_ring
-from agnpy.radiation.radiative_process import RadiativeProcess
+from ..radiative_process import RadiativeProcess
 from ..targets import (
     CMB,
     PointSourceBehindJet,
diff --git a/agnpy/compton/synchrotron_self_compton.py b/agnpy/compton/synchrotron_self_compton.py
index 0b0c168..32bbe67 100644
--- a/agnpy/compton/synchrotron_self_compton.py
+++ b/agnpy/compton/synchrotron_self_compton.py
@@ -10,7 +10,7 @@
     nu_to_integrate,
 )
 from ..utils.conversion import nu_to_epsilon_prime
-from agnpy.radiation.radiative_process import RadiativeProcess
+from ..radiative_process import RadiativeProcess
 
 __all__ = ["SynchrotronSelfCompton"]
 
diff --git a/agnpy/synchrotron/proton_synchrotron.py b/agnpy/synchrotron/proton_synchrotron.py
index d81e4fb..4c0c5b6 100644
--- a/agnpy/synchrotron/proton_synchrotron.py
+++ b/agnpy/synchrotron/proton_synchrotron.py
@@ -4,7 +4,7 @@
 from astropy.constants import e, c, m_p
 from ..utils.math import axes_reshaper, gamma_e_to_integrate
 from ..utils.conversion import nu_to_epsilon_prime, B_to_cgs, lambda_c_p
-from agnpy.radiation.radiative_process import RadiativeProcess
+from ..radiative_process import RadiativeProcess
 from .synchrotron import single_particle_synch_power, tau_to_attenuation
 
 __all__ = ["ProtonSynchrotron"]
diff --git a/agnpy/synchrotron/synchrotron.py b/agnpy/synchrotron/synchrotron.py
index 8391bed..9289030 100644
--- a/agnpy/synchrotron/synchrotron.py
+++ b/agnpy/synchrotron/synchrotron.py
@@ -4,7 +4,7 @@
 from astropy.constants import e, h, c, m_e, sigma_T
 from ..utils.math import axes_reshaper, gamma_e_to_integrate
 from ..utils.conversion import nu_to_epsilon_prime, B_to_cgs, lambda_c_e
-from agnpy.radiation.radiative_process import RadiativeProcess
+from ..radiative_process import RadiativeProcess
 
 
 __all__ = ["R", "nu_synch_peak", "Synchrotron"]