diff --git a/.coveragerc b/.coveragerc
index 2b3bfe9e..9c10ed56 100644
--- a/.coveragerc
+++ b/.coveragerc
@@ -7,5 +7,7 @@ omit = */kiplot/docopt.py
 [report]
 exclude_lines =
     pragma: no cover
+    @pre_class
+    @output_class
 #    raise RuntimeError