diff --git a/pyproject.toml b/pyproject.toml
index 6eac504a..695bca68 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -168,7 +168,6 @@ select = ["E2", "E4", "E7", "E9", "F", "B018", "UP034", "N802"]
 "docs/friedland/chapter_10.ipynb" = ["E731", "F841"]
 "docs/friedland/chapter_7_part_2.ipynb" = ["N802"]
 "docs/friedland/chapter_9.ipynb" = ["E731"]
-"docs/friedland/chapter_7_part_2.ipynb" = ["E241"]
 "docs/gallery/plot_advanced_triangle.ipynb" = ["E225"]
 "docs/gallery/plot_ave_analysis.ipynb" = ["E203", "E225"]
 "docs/gallery/plot_benktander.ipynb" = ["E251"]