diff --git a/src/thermophysicalModels/radiation/derivedFvPatchFields/greyDiffusiveRadiation/greyDiffusiveRadiationMixedFvPatchScalarField.C b/src/thermophysicalModels/radiation/derivedFvPatchFields/greyDiffusiveRadiation/greyDiffusiveRadiationMixedFvPatchScalarField.C
index f8e63679a2..c80992e73c 100644
--- a/src/thermophysicalModels/radiation/derivedFvPatchFields/greyDiffusiveRadiation/greyDiffusiveRadiationMixedFvPatchScalarField.C
+++ b/src/thermophysicalModels/radiation/derivedFvPatchFields/greyDiffusiveRadiation/greyDiffusiveRadiationMixedFvPatchScalarField.C
@@ -81,7 +81,7 @@ greyDiffusiveRadiationMixedFvPatchScalarField
     TName_(dict.lookup("T")),
     emissivity_(readScalar(dict.lookup("emissivity")))
 {
-    if (dict.found("value"))
+    if (dict.found("refValue"))
     {
         fvPatchScalarField::operator=
         (