diff --git a/chaospy/descriptives/sensitivity/main2.py b/chaospy/descriptives/sensitivity/main2.py
index ad9550a..231ed98 100644
--- a/chaospy/descriptives/sensitivity/main2.py
+++ b/chaospy/descriptives/sensitivity/main2.py
@@ -112,7 +112,9 @@ def SecondOrderSobol(
                     bool(
                         alpha[idx]
                         and alpha[idx]
-                        and not any(alpha[:idy] + alpha[idy + 1:idx] + alpha[idx + 1 :])
+                        and not any(
+                            alpha[:idy] + alpha[idy + 1 : idx] + alpha[idx + 1 :]
+                        )
                     )
                     for alpha in alphas
                 ]