diff --git a/.coveragerc b/.coveragerc
index 1c5e7654e..f18c5ea52 100644
--- a/.coveragerc
+++ b/.coveragerc
@@ -10,6 +10,8 @@ exclude_also =
     def create_lut():
     # Don't complain about debug code
     if DEBUG:
+    # Don't complain about compatibility code
+    class TypeGuard:
 
 [run]
 omit =