diff --git a/trollsched/boundary.py b/trollsched/boundary.py
index 6df1638..188aa00 100644
--- a/trollsched/boundary.py
+++ b/trollsched/boundary.py
@@ -40,7 +40,6 @@
 
 class InstrumentNotSupported(Exception):
     """Exception to capture cases when instrument are (yet) not supported."""
-    pass
 
 
 class SwathBoundary(Boundary):