diff --git a/esbo_etc/classes/optical_component/Atmosphere.py b/esbo_etc/classes/optical_component/Atmosphere.py
index d56e895..e42ecf7 100644
--- a/esbo_etc/classes/optical_component/Atmosphere.py
+++ b/esbo_etc/classes/optical_component/Atmosphere.py
@@ -1,4 +1,6 @@
-from esbo_etc.classes import AOpticalComponent, ITransmissive, SpectralQty
+from esbo_etc.classes.optical_component.AOpticalComponent import AOpticalComponent
+from esbo_etc.classes.ITransmissive import ITransmissive
+from esbo_etc.classes.SpectralQty import SpectralQty
 import astropy.units as u