diff --git a/src/thermophysicalModels/radiation/radiationModels/fvDOM/fvDOM/fvDOM.H b/src/thermophysicalModels/radiation/radiationModels/fvDOM/fvDOM/fvDOM.H
index 546fa511951075aa97a482574d4a3c05d675398e..5ce925904c91f6d9e0722a48afbadec10f89ba28 100644
--- a/src/thermophysicalModels/radiation/radiationModels/fvDOM/fvDOM/fvDOM.H
+++ b/src/thermophysicalModels/radiation/radiationModels/fvDOM/fvDOM/fvDOM.H
@@ -128,7 +128,7 @@ class fvDOM
         scalar convergence_;
 
         //- Maximum number of iterations
-        scalar maxIter_;
+        label maxIter_;
 
         //- List of cached fvMatrices for rays
         List<PtrList<fvScalarMatrix>>fvRayDiv_;