diff --git a/saqc/core/translation/basescheme.py b/saqc/core/translation/basescheme.py
index 08509a2f0f6f764ac16d55d5564b57925af717f9..1a74597bd74d62ec075c5a24827d074a9c049411 100644
--- a/saqc/core/translation/basescheme.py
+++ b/saqc/core/translation/basescheme.py
@@ -23,7 +23,7 @@ ForwardMap = Dict[ExternalFlag, float]
 BackwardMap = Dict[float, ExternalFlag]
 
 
-class TranslationScheme:
+class TranslationScheme:  # pragma: no cover
     @property
     @abstractmethod
     def DFILTER_DEFAULT(self):