diff --git a/qiskit/circuit/library/standard_gates/x.py b/qiskit/circuit/library/standard_gates/x.py
index 9a78a3fcedbf..65205ba145cc 100644
--- a/qiskit/circuit/library/standard_gates/x.py
+++ b/qiskit/circuit/library/standard_gates/x.py
@@ -1426,13 +1426,14 @@ def __init__(
             dirty_ancillas: when set to ``True``, the method applies an optimized multicontrolled-X gate
                 up to a relative phase using dirty ancillary qubits with the properties of lemmas 7 and 8
                 from arXiv:1501.06911, with at most 8*k - 6 CNOT gates.
-                For k within the range {1, ..., ceil(n/2)}. And for n representing the total number of qubits.
-
-            relative_phase: when set to ``True``, the method applies the optimized multicontrolled-X gate up to a
-                relative phase, in a way that, by lemma 7 of arXiv:1501.06911, the relative
+                For k within the range {1, ..., ceil(n/2)}. And for n representing the total number of
+                qubits.
+            relative_phase: when set to ``True``, the method applies the optimized multicontrolled-X gate
+                up to a relative phase, in a way that, by lemma 7 of arXiv:1501.06911, the relative
                 phases of the ``action part`` cancel out with the phases of the ``reset part``.
 
-            action_only: when set to ``True``, the method applies only the action part of lemma 8 from arXiv:1501.06911.
+            action_only: when set to ``True``, the method applies only the action part of lemma 8
+                from arXiv:1501.06911.
 
         """
         super().__init__(