diff --git a/nifty6/operators/energy_operators.py b/nifty6/operators/energy_operators.py
index 11b95fefba195d98d46e4abafc4219b2eef58a0c..52eff6b3d2589c502d27d18a8651fea73b45b179 100644
--- a/nifty6/operators/energy_operators.py
+++ b/nifty6/operators/energy_operators.py
@@ -286,7 +286,7 @@ class StudentTEnergy(EnergyOperator):
     ----------
     domain : `Domain` or `DomainTuple`
         Domain of the operator
-    theta : Scalar
+    theta : Scalar or Field
         Degree of freedom parameter for the student t distribution
     """