diff --git a/setup.cfg b/setup.cfg
index eca06fa111..114a20677c 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -21,8 +21,5 @@ ignore_missing_imports = True
 install_types   = True
 non_interactive = True
 
-[mypy-openfisca_core.commons.tests.*]
-ignore_errors = True
-
 [mypy-openfisca_core.scripts.*]
 ignore_errors = True