diff --git a/src/OpenFOAM/containers/Lists/CompactListList/CompactListList.C b/src/OpenFOAM/containers/Lists/CompactListList/CompactListList.C
index 6c12a7d1f8..c11591d37c 100644
--- a/src/OpenFOAM/containers/Lists/CompactListList/CompactListList.C
+++ b/src/OpenFOAM/containers/Lists/CompactListList/CompactListList.C
@@ -161,7 +161,7 @@ void Foam::CompactListList<T>::setSize(const labelUList& rowSizes)
 template<class T>
 void Foam::CompactListList<T>::clear()
 {
-    offsets_ = List<label>(1, 0);
+    offsets_ = List<label>(label(1), label(0));
     m_.clear();
 
     UCompactListList<T>::shallowCopy(UCompactListList<T>(offsets_, m_));
diff --git a/src/OpenFOAM/containers/Lists/CompactListList/CompactListListI.H b/src/OpenFOAM/containers/Lists/CompactListList/CompactListListI.H
index 5c52e00009..38e5d18105 100644
--- a/src/OpenFOAM/containers/Lists/CompactListList/CompactListListI.H
+++ b/src/OpenFOAM/containers/Lists/CompactListList/CompactListListI.H
@@ -32,7 +32,7 @@ template<class T>
 inline Foam::CompactListList<T>::CompactListList()
 :
     UCompactListList<T>(),
-    offsets_(1, 0),
+    offsets_(label(1), label(0)),
     m_()
 {
     UCompactListList<T>::shallowCopy(UCompactListList<T>(offsets_, m_));
diff --git a/src/thermophysicalModels/specie/reaction/Reactions/Reaction/Reaction.C b/src/thermophysicalModels/specie/reaction/Reactions/Reaction/Reaction.C
index c861d30887..e85581ee59 100644
--- a/src/thermophysicalModels/specie/reaction/Reactions/Reaction/Reaction.C
+++ b/src/thermophysicalModels/specie/reaction/Reactions/Reaction/Reaction.C
@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     | Website:  https://openfoam.org
-    \\  /    A nd           | Copyright (C) 2011-2021 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2011-2022 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -431,7 +431,7 @@ void Foam::Reaction<ReactionThermo>::ddNdtByVdcTp
                 {
                     dCfdcj *=
                         c[si] >= small || el >= 1
-                      ? el*pow(max(c[si], 0), el - specieExponent(1))
+                      ? el*pow(max(c[si], 0), el - specieExponent(label(1)))
                       : 0;
                 }
                 else
@@ -470,7 +470,7 @@ void Foam::Reaction<ReactionThermo>::ddNdtByVdcTp
                 {
                     dCrcj *=
                         c[si] >= small || er >= 1
-                      ? er*pow(max(c[si], 0), er - specieExponent(1))
+                      ? er*pow(max(c[si], 0), er - specieExponent(label(1)))
                       : 0;
                 }
                 else