diff --git a/source/conf.py b/source/conf.py
index c1d61126..0a82f060 100644
--- a/source/conf.py
+++ b/source/conf.py
@@ -35,7 +35,7 @@
     'python': ('https://docs.python.org/3/', None),
     }
 
-nitpick_ignore = [('T')]  # see https://stackoverflow.com/questions/11417221
+nitpick_ignore = [('openfisca_core.types.data_types.arrays.T')]  # see https://stackoverflow.com/questions/11417221
 
 source_suffix = ['.rst', '.md']