diff --git a/qiskit/quantum_info/operators/symplectic/pauli.py b/qiskit/quantum_info/operators/symplectic/pauli.py
index 0c7f7e548444..5e0df3cd2df1 100644
--- a/qiskit/quantum_info/operators/symplectic/pauli.py
+++ b/qiskit/quantum_info/operators/symplectic/pauli.py
@@ -105,7 +105,7 @@ class initialization (``Pauli('-iXYZ')``). A ``Pauli`` object can be
 
     .. math::
 
-        P &= (-i)^{q + z\cdot x} Z^z \cdot X^x.
+        P = (-i)^{q + z\cdot x} Z^z \cdot X^x.
 
     The :math:`k`th qubit corresponds to the :math:`k`th entry in the
     :math:`z` and :math:`x` arrays