diff --git a/esbo_etc/classes/target/ATarget.py b/esbo_etc/classes/target/ATarget.py
index f3096eb..cd1b8b5 100644
--- a/esbo_etc/classes/target/ATarget.py
+++ b/esbo_etc/classes/target/ATarget.py
@@ -8,6 +8,7 @@ class ATarget(ITransmissive):
     """
     Abstract super class for target models
     """
+
     @abstractmethod
     def __init__(self, sfd: SpectralQty):
         """