diff --git a/src/OpenFOAM/db/IOobject/IOobjectI.H b/src/OpenFOAM/db/IOobject/IOobjectI.H
index df67faa983..765b7974c8 100644
--- a/src/OpenFOAM/db/IOobject/IOobjectI.H
+++ b/src/OpenFOAM/db/IOobject/IOobjectI.H
@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     | Website:  https://openfoam.org
-    \\  /    A nd           | Copyright (C) 2011-2019 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2011-2020 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -46,7 +46,7 @@ inline Foam::word Foam::IOobject::modelName(Name name, const word& model)
 {
     if (model != word::null)
     {
-        return name + (':' + model);
+        return (model + ':') + name;
     }
     else
     {