diff --git a/tutorials/incompressible/pimpleFoam/RAS/elipsekkLOmega/Allrun b/tutorials/incompressible/pimpleFoam/RAS/elipsekkLOmega/Allrun
index 290d63be2..39811f95f 100755
--- a/tutorials/incompressible/pimpleFoam/RAS/elipsekkLOmega/Allrun
+++ b/tutorials/incompressible/pimpleFoam/RAS/elipsekkLOmega/Allrun
@@ -10,9 +10,9 @@ application=$(getApplication)
 runApplication blockMesh
 runApplication transformPoints -scale '(1.6666 1 1)'
 
-runApplication mirrorMesh -dict mirrorMeshDict.X -overwrite
+runApplication mirrorMesh -dict mirrorMeshDict.x -overwrite
 rm log.mirrorMesh
-runApplication mirrorMesh -dict mirrorMeshDict.Y -overwrite
+runApplication mirrorMesh -dict mirrorMeshDict.y -overwrite
 rm log.mirrorMesh
 
 runApplication topoSet
diff --git a/tutorials/incompressible/pimpleFoam/RAS/elipsekkLOmega/system/mirrorMeshDict.x b/tutorials/incompressible/pimpleFoam/RAS/elipsekkLOmega/system/mirrorMeshDict.x
new file mode 100644
index 000000000..666839aa1
--- /dev/null
+++ b/tutorials/incompressible/pimpleFoam/RAS/elipsekkLOmega/system/mirrorMeshDict.x
@@ -0,0 +1,29 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| =========                 |                                                 |
+| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
+|  \\    /   O peration     | Version:  dev                                   |
+|   \\  /    A nd           | Web:      www.OpenFOAM.org                      |
+|    \\/     M anipulation  |                                                 |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+    version     2.0;
+    format      ascii;
+    class       dictionary;
+    location    "system";
+    object      mirrorMeshDict;
+}
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+planeType       pointAndNormal;
+
+pointAndNormalDict
+{
+    point   (0 0 0);
+    normal  (-1 0 0);
+}
+
+planeTolerance  1e-06;
+
+
+// ************************************************************************* //
diff --git a/tutorials/incompressible/pimpleFoam/RAS/elipsekkLOmega/system/mirrorMeshDict.y b/tutorials/incompressible/pimpleFoam/RAS/elipsekkLOmega/system/mirrorMeshDict.y
new file mode 100644
index 000000000..a1fb3e127
--- /dev/null
+++ b/tutorials/incompressible/pimpleFoam/RAS/elipsekkLOmega/system/mirrorMeshDict.y
@@ -0,0 +1,29 @@
+/*--------------------------------*- C++ -*----------------------------------*\
+| =========                 |                                                 |
+| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
+|  \\    /   O peration     | Version:  dev                                   |
+|   \\  /    A nd           | Web:      www.OpenFOAM.org                      |
+|    \\/     M anipulation  |                                                 |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+    version     2.0;
+    format      ascii;
+    class       dictionary;
+    location    "system";
+    object      mirrorMeshDict;
+}
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+planeType       pointAndNormal;
+
+pointAndNormalDict
+{
+    point   (0 0 0);
+    normal  (0 -1 0);
+}
+
+planeTolerance  1e-06;
+
+
+// ************************************************************************* //